1057111680 has 256 divisors, whose sum is σ = 3608841600. Its totient is φ = 262275072.

The previous prime is 1057111669. The next prime is 1057111739. The reversal of 1057111680 is 861117501.

It is a super-2 number, since 2×1057111680² = 2234970207984844800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 4536844 + ... + 4537076.

Almost surely, 2^1057111680 is an apocalyptic number.

1057111680 is a gapful number since it is divisible by the number (10) 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 1057111680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1804420800).

1057111680 is an abundant number, since it is smaller than the sum of its proper divisors (2551729920).

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

1057111680 is a wasteful number, since it uses less digits than its factorization.

1057111680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 30.

The square root of 1057111680 is about 32513.2539128276. The cubic root of 1057111680 is about 1018.6858894003.

The spelling of 1057111680 in words is "one billion, fifty-seven million, one hundred eleven thousand, six hundred eighty".