1379502539 has 2 divisors, whose sum is σ = 1379502540. Its totient is φ = 1379502538.

The previous prime is 1379502521. The next prime is 1379502571. The reversal of 1379502539 is 9352059731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1379502539 - 2⁸ = 1379502283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1379502539.

It is not a weakly prime, because it can be changed into another prime (1379505539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689751269 + 689751270.

It is an arithmetic number, because the mean of its divisors is an integer number (689751270).

Almost surely, 2^1379502539 is an apocalyptic number.

1379502539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1379502539 is an equidigital number, since it uses as much as digits as its factorization.

1379502539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 255150, while the sum is 44.

The square root of 1379502539 is about 37141.6550385144. The cubic root of 1379502539 is about 1113.2024873319.

The spelling of 1379502539 in words is "one billion, three hundred seventy-nine million, five hundred two thousand, five hundred thirty-nine".