13139492185 has 8 divisors (see below), whose sum is σ = 16694884296. Its totient is φ = 9893264640.

The previous prime is 13139492159. The next prime is 13139492209. The reversal of 13139492185 is 58129493131.

It can be written as a sum of positive squares in 4 ways, for example, as 5586665536 + 7552826649 = 74744^2 + 86907^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13139492185 - 2⁵ = 13139492153 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 77291046 + ... + 77291215.

It is an arithmetic number, because the mean of its divisors is an integer number (2086860537).

Almost surely, 2^13139492185 is an apocalyptic number.

It is an amenable number.

13139492185 is a deficient number, since it is larger than the sum of its proper divisors (3555392111).

13139492185 is a wasteful number, since it uses less digits than its factorization.

13139492185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154582283.

The product of its digits is 233280, while the sum is 46.

The spelling of 13139492185 in words is "thirteen billion, one hundred thirty-nine million, four hundred ninety-two thousand, one hundred eighty-five".