1274306985 has 120 divisors (see below), whose sum is σ = 2680725960. Its totient is φ = 577414656.

The previous prime is 1274306941. The next prime is 1274306993. The reversal of 1274306985 is 5896034721.

1274306985 is a `hidden beast` number, since 127 + 430 + 6 + 98 + 5 = 666.

1274306985 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 250050969 + 1024256016 = 15813^2 + 32004^2 .

It is not a de Polignac number, because 1274306985 - 2⁸ = 1274306729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

1274306985 is strictly pandigital in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1274306985.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3115461 + ... + 3115869.

It is an arithmetic number, because the mean of its divisors is an integer number (22339383).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1274306985 = 2548613970, but 3⋅1274306985 = 3822920955 is not.

It is a vampire number, since it can be written as 18405 ⋅ 69237 (with its own digits).

Almost surely, 2^1274306985 is an apocalyptic number.

1274306985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1274306985 is an abundant number, since it is smaller than the sum of its proper divisors (1406418975).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1274306985 is a wasteful number, since it uses less digits than its factorization.

1274306985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 581 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1274306985 is about 35697.4366726800. The cubic root of 1274306985 is about 1084.1549437995.

The spelling of 1274306985 in words is "one billion, two hundred seventy-four million, three hundred six thousand, nine hundred eighty-five".