39742474238 has 16 divisors (see below), whose sum is σ = 61722677760. Its totient is φ = 19172122200.

The previous prime is 39742474229. The next prime is 39742474271. The reversal of 39742474238 is 83247424793.

39742474238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 39742474238.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 947768 + ... + 988811.

It is an arithmetic number, because the mean of its divisors is an integer number (3857667360).

Almost surely, 2^39742474238 is an apocalyptic number.

39742474238 is a deficient number, since it is larger than the sum of its proper divisors (21980203522).

39742474238 is a wasteful number, since it uses less digits than its factorization.

39742474238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936943.

The product of its digits is 8128512, while the sum is 53.

The spelling of 39742474238 in words is "thirty-nine billion, seven hundred forty-two million, four hundred seventy-four thousand, two hundred thirty-eight".