39186942946 has 16 divisors (see below), whose sum is σ = 59997090744. Its totient is φ = 19189241344.

The previous prime is 39186942937. The next prime is 39186943001. The reversal of 39186942946 is 64924968193.

It can be written as a sum of positive squares in 4 ways, for example, as 17478162025 + 21708780921 = 132205^2 + 147339^2 .

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, 272815 + ... + 390898.

Almost surely, 2^39186942946 is an apocalyptic number.

39186942946 is a deficient number, since it is larger than the sum of its proper divisors (20810147798).

39186942946 is a wasteful number, since it uses less digits than its factorization.

39186942946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664325.

The product of its digits is 20155392, while the sum is 61.

The spelling of 39186942946 in words is "thirty-nine billion, one hundred eighty-six million, nine hundred forty-two thousand, nine hundred forty-six".