8972891637 has 8 divisors (see below), whose sum is σ = 11967629280. Its totient is φ = 5980040880.

The previous prime is 8972891617. The next prime is 8972891651. The reversal of 8972891637 is 7361982798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8972891637 - 2⁸ = 8972891381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8972891617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460587 + ... + 479672.

It is an arithmetic number, because the mean of its divisors is an integer number (1495953660).

Almost surely, 2^8972891637 is an apocalyptic number.

It is an amenable number.

8972891637 is a deficient number, since it is larger than the sum of its proper divisors (2994737643).

8972891637 is a wasteful number, since it uses less digits than its factorization.

8972891637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943443.

The product of its digits is 9144576, while the sum is 60.

The square root of 8972891637 is about 94725.3484395808. The cubic root of 8972891637 is about 2077.9932905983.

The spelling of 8972891637 in words is "eight billion, nine hundred seventy-two million, eight hundred ninety-one thousand, six hundred thirty-seven".