39442031613 has 24 divisors (see below), whose sum is σ = 57960520800. Its totient is φ = 25840245024.

The previous prime is 39442031599. The next prime is 39442031621. The reversal of 39442031613 is 31613024493.

39442031613 is a `hidden beast` number, since 3 + 9 + 4 + 4 + 2 + 0 + 31 + 613 = 666.

It is not a de Polignac number, because 39442031613 - 2⁸ = 39442031357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39442031633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174603 + ... + 330711.

It is an arithmetic number, because the mean of its divisors is an integer number (2415021700).

Almost surely, 2^39442031613 is an apocalyptic number.

It is an amenable number.

39442031613 is a deficient number, since it is larger than the sum of its proper divisors (18518489187).

39442031613 is a wasteful number, since it uses less digits than its factorization.

39442031613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156601 (or 156598 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The spelling of 39442031613 in words is "thirty-nine billion, four hundred forty-two million, thirty-one thousand, six hundred thirteen".