13187942639 has 8 divisors (see below), whose sum is σ = 13208312832. Its totient is φ = 13167590040.

The previous prime is 13187942633. The next prime is 13187942681. The reversal of 13187942639 is 93624978131.

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

It is a cyclic number.

It is not a de Polignac number, because 13187942639 - 2⁴ = 13187942623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13187942633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2367872 + ... + 2373434.

It is an arithmetic number, because the mean of its divisors is an integer number (1651039104).

Almost surely, 2^13187942639 is an apocalyptic number.

13187942639 is a deficient number, since it is larger than the sum of its proper divisors (20370193).

13187942639 is a wasteful number, since it uses less digits than its factorization.

13187942639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8797.

The product of its digits is 1959552, while the sum is 53.

The spelling of 13187942639 in words is "thirteen billion, one hundred eighty-seven million, nine hundred forty-two thousand, six hundred thirty-nine".