1057931856 has 120 divisors (see below), whose sum is σ = 3192920640. Its totient is φ = 325900800.

The previous prime is 1057931839. The next prime is 1057931867. The reversal of 1057931856 is 6581397501.

It is a happy number.

1057931856 is a `hidden beast` number, since 10 + 579 + 3 + 18 + 56 = 666.

It is a super-2 number, since 2×1057931856² = 2238439623879209472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107461 + ... + 116891.

It is an arithmetic number, because the mean of its divisors is an integer number (26607672).

Almost surely, 2^1057931856 is an apocalyptic number.

1057931856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1057931856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1596460320).

1057931856 is an abundant number, since it is smaller than the sum of its proper divisors (2134988784).

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

1057931856 is a wasteful number, since it uses less digits than its factorization.

1057931856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9505 (or 9496 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 1057931856 is about 32525.8644158768. The cubic root of 1057931856 is about 1018.9492755521.

The spelling of 1057931856 in words is "one billion, fifty-seven million, nine hundred thirty-one thousand, eight hundred fifty-six".