8639642048 has 56 divisors (see below), whose sum is σ = 17275576320. Its totient is φ = 4286862080.

The previous prime is 8639642023. The next prime is 8639642051. The reversal of 8639642048 is 8402469368.

It is a happy number.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8639641987 and 8639642005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8788565 + ... + 8789547.

Almost surely, 2^8639642048 is an apocalyptic number.

It is an amenable number.

8639642048 is a deficient number, since it is larger than the sum of its proper divisors (8635934272).

8639642048 is a wasteful number, since it uses less digits than its factorization.

8639642048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1905 (or 1895 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 50.

The square root of 8639642048 is about 92949.6748138475. The cubic root of 8639642048 is about 2051.9427981526.

The spelling of 8639642048 in words is "eight billion, six hundred thirty-nine million, six hundred forty-two thousand, forty-eight".