8238638634 has 32 divisors (see below), whose sum is σ = 17458255296. Its totient is φ = 2582933760.

The previous prime is 8238638627. The next prime is 8238638677. The reversal of 8238638634 is 4368368328.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129784 + ... + 182540.

It is an arithmetic number, because the mean of its divisors is an integer number (545570478).

Almost surely, 2^8238638634 is an apocalyptic number.

8238638634 is an abundant number, since it is smaller than the sum of its proper divisors (9219616662).

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

8238638634 is a wasteful number, since it uses less digits than its factorization.

8238638634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54310.

The product of its digits is 3981312, while the sum is 51.

The square root of 8238638634 is about 90766.9468143553. The cubic root of 8238638634 is about 2019.6920284988.

The spelling of 8238638634 in words is "eight billion, two hundred thirty-eight million, six hundred thirty-eight thousand, six hundred thirty-four".