2581956870 has 16 divisors (see below), whose sum is σ = 6196696560. Its totient is φ = 688521824.

The previous prime is 2581956859. The next prime is 2581956893. The reversal of 2581956870 is 786591852.

2581956870 is nontrivially palindromic in base 12.

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, 43032585 + ... + 43032644.

It is an arithmetic number, because the mean of its divisors is an integer number (387293535).

Almost surely, 2^2581956870 is an apocalyptic number.

2581956870 is an abundant number, since it is smaller than the sum of its proper divisors (3614739690).

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

2581956870 is a wasteful number, since it uses less digits than its factorization.

2581956870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86065239.

The product of its (nonzero) digits is 1209600, while the sum is 51.

The square root of 2581956870 is about 50812.9596658175. The cubic root of 2581956870 is about 1371.8806413150.

The spelling of 2581956870 in words is "two billion, five hundred eighty-one million, nine hundred fifty-six thousand, eight hundred seventy".