7985611590 has 48 divisors (see below), whose sum is σ = 21066184944. Its totient is φ = 1935904960.

The previous prime is 7985611567. The next prime is 7985611609. The reversal of 7985611590 is 951165897.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1096317 + ... + 1103576.

It is an arithmetic number, because the mean of its divisors is an integer number (438878853).

Almost surely, 2^7985611590 is an apocalyptic number.

7985611590 is an abundant number, since it is smaller than the sum of its proper divisors (13080573354).

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

7985611590 is a wasteful number, since it uses less digits than its factorization.

7985611590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199925 (or 2199914 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 51.

The square root of 7985611590 is about 89362.2492442978. The cubic root of 7985611590 is about 1998.8002462727.

The spelling of 7985611590 in words is "seven billion, nine hundred eighty-five million, six hundred eleven thousand, five hundred ninety".