2581957882 has 32 divisors (see below), whose sum is σ = 4593168000. Its totient is φ = 1087781184.

The previous prime is 2581957849. The next prime is 2581957901. The reversal of 2581957882 is 2887591852.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8578 + ... + 72370.

It is an arithmetic number, because the mean of its divisors is an integer number (143536500).

Almost surely, 2^2581957882 is an apocalyptic number.

2581957882 is a deficient number, since it is larger than the sum of its proper divisors (2011210118).

2581957882 is an equidigital number, since it uses as much as digits as its factorization.

2581957882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63875 (or 63861 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 55.

The square root of 2581957882 is about 50812.9696239061. The cubic root of 2581957882 is about 1371.8808205515.

The spelling of 2581957882 in words is "two billion, five hundred eighty-one million, nine hundred fifty-seven thousand, eight hundred eighty-two".