1276485345 has 32 divisors (see below), whose sum is σ = 2272262400. Its totient is φ = 679905792.

The previous prime is 1276485317. The next prime is 1276485347. The reversal of 1276485345 is 5435846721.

1276485345 is a `hidden beast` number, since 1 + 2 + 76 + 48 + 534 + 5 = 666.

It is not a de Polignac number, because 1276485345 - 2¹¹ = 1276483297 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1276485345.

It is not an unprimeable number, because it can be changed into a prime (1276485347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105361 + ... + 116849.

It is an arithmetic number, because the mean of its divisors is an integer number (71008200).

Almost surely, 2^1276485345 is an apocalyptic number.

1276485345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1276485345 is a deficient number, since it is larger than the sum of its proper divisors (995777055).

1276485345 is a wasteful number, since it uses less digits than its factorization.

1276485345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12326 (or 12320 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 1276485345 is about 35727.9350788707. The cubic root of 1276485345 is about 1084.7723605197.

The spelling of 1276485345 in words is "one billion, two hundred seventy-six million, four hundred eighty-five thousand, three hundred forty-five".