2100971456 has 14 divisors (see below), whose sum is σ = 4169115360. Its totient is φ = 1050485696.

The previous prime is 2100971413. The next prime is 2100971471. The reversal of 2100971456 is 6541790012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16413776 + ... + 16413903.

Almost surely, 2^2100971456 is an apocalyptic number.

It is an amenable number.

2100971456 is a deficient number, since it is larger than the sum of its proper divisors (2068143904).

2100971456 is an equidigital number, since it uses as much as digits as its factorization.

2100971456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32827691 (or 32827681 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 2100971456 is about 45836.3551779589. The cubic root of 2100971456 is about 1280.7765990406.

The spelling of 2100971456 in words is "two billion, one hundred million, nine hundred seventy-one thousand, four hundred fifty-six".