5139801509 has 2 divisors, whose sum is σ = 5139801510. Its totient is φ = 5139801508.

The previous prime is 5139801503. The next prime is 5139801517. The reversal of 5139801509 is 9051089315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4777850884 + 361950625 = 69122^2 + 19025^2 .

It is a cyclic number.

It is not a de Polignac number, because 5139801509 - 2³² = 844834213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5139801503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2569900754 + 2569900755.

It is an arithmetic number, because the mean of its divisors is an integer number (2569900755).

Almost surely, 2^5139801509 is an apocalyptic number.

It is an amenable number.

5139801509 is a deficient number, since it is larger than the sum of its proper divisors (1).

5139801509 is an equidigital number, since it uses as much as digits as its factorization.

5139801509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48600, while the sum is 41.

The square root of 5139801509 is about 71692.4090054170. The cubic root of 5139801509 is about 1725.7668238383.

The spelling of 5139801509 in words is "five billion, one hundred thirty-nine million, eight hundred one thousand, five hundred nine".