1274081920 has 32 divisors (see below), whose sum is σ = 3045853620. Its totient is φ = 509632512.

The previous prime is 1274081909. The next prime is 1274081953. The reversal of 1274081920 is 291804721.

It can be written as a sum of positive squares in 2 ways, for example, as 1263375936 + 10705984 = 35544^2 + 3272^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994737 + ... + 996016.

Almost surely, 2^1274081920 is an apocalyptic number.

1274081920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1274081920 is an abundant number, since it is smaller than the sum of its proper divisors (1771771700).

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

1274081920 is an equidigital number, since it uses as much as digits as its factorization.

1274081920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990772 (or 1990760 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1274081920 is about 35694.2841362591. The cubic root of 1274081920 is about 1084.0911131051.

The spelling of 1274081920 in words is "one billion, two hundred seventy-four million, eighty-one thousand, nine hundred twenty".