7987972532 has 6 divisors (see below), whose sum is σ = 13978951938. Its totient is φ = 3993986264.

The previous prime is 7987972511. The next prime is 7987972547. The reversal of 7987972532 is 2352797897.

It can be written as a sum of positive squares in only one way, i.e., 4350193936 + 3637778596 = 65956^2 + 60314^2 .

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, 998496563 + ... + 998496570.

It is an arithmetic number, because the mean of its divisors is an integer number (2329825323).

Almost surely, 2^7987972532 is an apocalyptic number.

It is an amenable number.

7987972532 is a deficient number, since it is larger than the sum of its proper divisors (5990979406).

7987972532 is a wasteful number, since it uses less digits than its factorization.

7987972532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996993137 (or 1996993135 counting only the distinct ones).

The product of its digits is 13335840, while the sum is 59.

The square root of 7987972532 is about 89375.4582198044. The cubic root of 7987972532 is about 1998.9972082884.

The spelling of 7987972532 in words is "seven billion, nine hundred eighty-seven million, nine hundred seventy-two thousand, five hundred thirty-two".