1057049686 has 128 divisors (see below), whose sum is σ = 2206310400. Its totient is φ = 367234560.

The previous prime is 1057049677. The next prime is 1057049689. The reversal of 1057049686 is 6869407501.

It is a super-2 number, since 2×1057049686² = 2234708077345397192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057049689) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7604605 + ... + 7604743.

It is an arithmetic number, because the mean of its divisors is an integer number (17236800).

Almost surely, 2^1057049686 is an apocalyptic number.

1057049686 is an abundant number, since it is smaller than the sum of its proper divisors (1149260714).

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

1057049686 is a wasteful number, since it uses less digits than its factorization.

1057049686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 1057049686 is about 32512.3005337980. The cubic root of 1057049686 is about 1018.6659755007.

The spelling of 1057049686 in words is "one billion, fifty-seven million, forty-nine thousand, six hundred eighty-six".