1057179809 has 8 divisors (see below), whose sum is σ = 1210333440. Its totient is φ = 904558176.

The previous prime is 1057179791. The next prime is 1057179919. The reversal of 1057179809 is 9089717501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1057179809 - 2²⁸ = 788744353 is a prime.

It is a super-2 number, since 2×1057179809² = 2235258297114552962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1057179709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128729 + ... + 136694.

It is an arithmetic number, because the mean of its divisors is an integer number (151291680).

Almost surely, 2^1057179809 is an apocalyptic number.

It is an amenable number.

1057179809 is a deficient number, since it is larger than the sum of its proper divisors (153153631).

1057179809 is an equidigital number, since it uses as much as digits as its factorization.

1057179809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265999.

The product of its (nonzero) digits is 158760, while the sum is 47.

The square root of 1057179809 is about 32514.3016071390. The cubic root of 1057179809 is about 1018.7077731051.

The spelling of 1057179809 in words is "one billion, fifty-seven million, one hundred seventy-nine thousand, eight hundred nine".