1057818540 has 96 divisors (see below), whose sum is σ = 3301240320. Its totient is φ = 251513856.

The previous prime is 1057818499. The next prime is 1057818577. The reversal of 1057818540 is 458187501.

It is a super-2 number, since 2×1057818540² = 2237960127135463200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7912 + ... + 46671.

It is an arithmetic number, because the mean of its divisors is an integer number (34387920).

Almost surely, 2^1057818540 is an apocalyptic number.

1057818540 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 1057818540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1650620160).

1057818540 is an abundant number, since it is smaller than the sum of its proper divisors (2243421780).

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

1057818540 is a wasteful number, since it uses less digits than its factorization.

1057818540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54631 (or 54629 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 39.

The square root of 1057818540 is about 32524.1224324347. The cubic root of 1057818540 is about 1018.9128940724.

The spelling of 1057818540 in words is "one billion, fifty-seven million, eight hundred eighteen thousand, five hundred forty".