2057581808 has 40 divisors (see below), whose sum is σ = 4233782592. Its totient is φ = 965357568.

The previous prime is 2057581739. The next prime is 2057581819. The reversal of 2057581808 is 8081857502.

It is a super-2 number, since 2×2057581808² = 8467285793225097728, 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 7 ways as a sum of consecutive naturals, for example, 80441 + ... + 102887.

Almost surely, 2^2057581808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2057581808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2116891296).

2057581808 is an abundant number, since it is smaller than the sum of its proper divisors (2176200784).

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

2057581808 is a wasteful number, since it uses less digits than its factorization.

2057581808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22809 (or 22803 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 44.

The square root of 2057581808 is about 45360.5754813583. The cubic root of 2057581808 is about 1271.8982520831.

The spelling of 2057581808 in words is "two billion, fifty-seven million, five hundred eighty-one thousand, eight hundred eight".