5138664648 has 32 divisors (see below), whose sum is σ = 13834867200. Its totient is φ = 1581127488.

The previous prime is 5138664617. The next prime is 5138664697. The reversal of 5138664648 is 8464668315.

It is a self number, because there is not a number n which added to its sum of digits gives 5138664648.

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, 8234728 + ... + 8235351.

It is an arithmetic number, because the mean of its divisors is an integer number (432339600).

Almost surely, 2^5138664648 is an apocalyptic number.

It is an amenable number.

5138664648 is an abundant number, since it is smaller than the sum of its proper divisors (8696202552).

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

5138664648 is a wasteful number, since it uses less digits than its factorization.

5138664648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16470101 (or 16470097 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 51.

The square root of 5138664648 is about 71684.4798265287. The cubic root of 5138664648 is about 1725.6395749770.

The spelling of 5138664648 in words is "five billion, one hundred thirty-eight million, six hundred sixty-four thousand, six hundred forty-eight".