1057811679 has 6 divisors (see below), whose sum is σ = 1527950216. Its totient is φ = 705207780.

The previous prime is 1057811647. The next prime is 1057811687. The reversal of 1057811679 is 9761187501.

1057811679 is a `hidden beast` number, since 1 + 0 + 578 + 1 + 1 + 6 + 79 = 666.

It is not a de Polignac number, because 1057811679 - 2⁵ = 1057811647 is a prime.

It is a super-2 number, since 2×1057811679² = 2237931096457598082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057811479) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58767307 + ... + 58767324.

Almost surely, 2^1057811679 is an apocalyptic number.

1057811679 is a deficient number, since it is larger than the sum of its proper divisors (470138537).

1057811679 is a wasteful number, since it uses less digits than its factorization.

1057811679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117534637 (or 117534634 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 45.

The square root of 1057811679 is about 32524.0169567045. The cubic root of 1057811679 is about 1018.9106911815.

The spelling of 1057811679 in words is "one billion, fifty-seven million, eight hundred eleven thousand, six hundred seventy-nine".