7738438764 has 48 divisors (see below), whose sum is σ = 21347424000. Its totient is φ = 2134741056.

The previous prime is 7738438753. The next prime is 7738438781. The reversal of 7738438764 is 4678348377.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1585914 + ... + 1590785.

It is an arithmetic number, because the mean of its divisors is an integer number (444738000).

Almost surely, 2^7738438764 is an apocalyptic number.

It is an amenable number.

7738438764 is an abundant number, since it is smaller than the sum of its proper divisors (13608985236).

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

7738438764 is a wasteful number, since it uses less digits than its factorization.

7738438764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176742 (or 3176740 counting only the distinct ones).

The product of its digits is 18966528, while the sum is 57.

The square root of 7738438764 is about 87968.3963932502. The cubic root of 7738438764 is about 1977.9612695412.

The spelling of 7738438764 in words is "seven billion, seven hundred thirty-eight million, four hundred thirty-eight thousand, seven hundred sixty-four".