1257013683 has 12 divisors (see below), whose sum is σ = 1817941320. Its totient is φ = 836968416.

The previous prime is 1257013679. The next prime is 1257013727. The reversal of 1257013683 is 3863107521.

1257013683 is a `hidden beast` number, since 1 + 2 + 570 + 1 + 3 + 6 + 83 = 666.

It is not a de Polignac number, because 1257013683 - 2² = 1257013679 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1257013633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79041 + ... + 93602.

It is an arithmetic number, because the mean of its divisors is an integer number (151495110).

Almost surely, 2^1257013683 is an apocalyptic number.

1257013683 is a deficient number, since it is larger than the sum of its proper divisors (560927637).

1257013683 is a wasteful number, since it uses less digits than its factorization.

1257013683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173458 (or 173455 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1257013683 is about 35454.3887692342. The cubic root of 1257013683 is about 1079.2283247873.

The spelling of 1257013683 in words is "one billion, two hundred fifty-seven million, thirteen thousand, six hundred eighty-three".