7938638708 has 96 divisors (see below), whose sum is σ = 19005477120. Its totient is φ = 2801111040.

The previous prime is 7938638677. The next prime is 7938638713. The reversal of 7938638708 is 8078368397.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193508 + ... + 230916.

It is an arithmetic number, because the mean of its divisors is an integer number (197973720).

Almost surely, 2^7938638708 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7938638708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9502738560).

7938638708 is an abundant number, since it is smaller than the sum of its proper divisors (11066838412).

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

7938638708 is a wasteful number, since it uses less digits than its factorization.

7938638708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37497 (or 37495 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 59.

The square root of 7938638708 is about 89099.0387602470. The cubic root of 7938638708 is about 1994.8734293647.

It can be divided in two parts, 7938 and 638708, that added together give a palindrome (646646).

The spelling of 7938638708 in words is "seven billion, nine hundred thirty-eight million, six hundred thirty-eight thousand, seven hundred eight".