5139137538 has 48 divisors (see below), whose sum is σ = 11443565952. Its totient is φ = 1665816000.

The previous prime is 5139137491. The next prime is 5139137557. The reversal of 5139137538 is 8357319315.

5139137538 is a `hidden beast` number, since 51 + 39 + 1 + 37 + 538 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 5139137493 and 5139137502.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218323 + ... + 240713.

It is an arithmetic number, because the mean of its divisors is an integer number (238407624).

Almost surely, 2^5139137538 is an apocalyptic number.

5139137538 is an abundant number, since it is smaller than the sum of its proper divisors (6304428414).

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

5139137538 is a wasteful number, since it uses less digits than its factorization.

5139137538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22751 (or 22748 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 5139137538 is about 71687.7781633662. The cubic root of 5139137538 is about 1725.6925078382.

The spelling of 5139137538 in words is "five billion, one hundred thirty-nine million, one hundred thirty-seven thousand, five hundred thirty-eight".