137613639 has 4 divisors (see below), whose sum is σ = 183484856. Its totient is φ = 91742424.

The previous prime is 137613617. The next prime is 137613643. The reversal of 137613639 is 936316731.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 137613639 - 2⁹ = 137613127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137613597 and 137613606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137613649) 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 3 ways as a sum of consecutive naturals, for example, 22935604 + ... + 22935609.

It is an arithmetic number, because the mean of its divisors is an integer number (45871214).

Almost surely, 2^137613639 is an apocalyptic number.

137613639 is a deficient number, since it is larger than the sum of its proper divisors (45871217).

137613639 is an equidigital number, since it uses as much as digits as its factorization.

137613639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45871216.

The product of its digits is 61236, while the sum is 39.

The square root of 137613639 is about 11730.8839820365. The cubic root of 137613639 is about 516.2822092167.

The spelling of 137613639 in words is "one hundred thirty-seven million, six hundred thirteen thousand, six hundred thirty-nine".