8152638931 has 4 divisors (see below), whose sum is σ = 8154048672. Its totient is φ = 8151229192.

The previous prime is 8152638887. The next prime is 8152638979. The reversal of 8152638931 is 1398362518.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8152638931 - 2⁷ = 8152638803 is a prime.

It is a super-2 number, since 2×8152638931² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8152638631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696160 + ... + 707773.

It is an arithmetic number, because the mean of its divisors is an integer number (2038512168).

Almost surely, 2^8152638931 is an apocalyptic number.

8152638931 is a deficient number, since it is larger than the sum of its proper divisors (1409741).

8152638931 is a wasteful number, since it uses less digits than its factorization.

8152638931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409740.

The product of its digits is 311040, while the sum is 46.

The square root of 8152638931 is about 90291.9649304411. The cubic root of 8152638931 is about 2012.6398596062.

The spelling of 8152638931 in words is "eight billion, one hundred fifty-two million, six hundred thirty-eight thousand, nine hundred thirty-one".