2591478972 has 72 divisors (see below), whose sum is σ = 6612824400. Its totient is φ = 855671040.

The previous prime is 2591478971. The next prime is 2591478973. The reversal of 2591478972 is 2798741952.

2591478972 is a `hidden beast` number, since 2 + 591 + 47 + 8 + 9 + 7 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (2591478971) and next prime (2591478973).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2591478971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2469904 + ... + 2470952.

Almost surely, 2^2591478972 is an apocalyptic number.

It is an amenable number.

2591478972 is an abundant number, since it is smaller than the sum of its proper divisors (4021345428).

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

2591478972 is a wasteful number, since it uses less digits than its factorization.

2591478972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643 (or 1638 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 2591478972 is about 50906.5710100376. The cubic root of 2591478972 is about 1373.5650435115.

The spelling of 2591478972 in words is "two billion, five hundred ninety-one million, four hundred seventy-eight thousand, nine hundred seventy-two".