39654953138 has 8 divisors (see below), whose sum is σ = 59530057500. Its totient is φ = 19811600640.

The previous prime is 39654953113. The next prime is 39654953179. The reversal of 39654953138 is 83135945693.

It is a happy number.

39654953138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39054850129 + 600103009 = 197623^2 + 24497^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7934843 + ... + 7939838.

Almost surely, 2^39654953138 is an apocalyptic number.

39654953138 is a deficient number, since it is larger than the sum of its proper divisors (19875104362).

39654953138 is a wasteful number, since it uses less digits than its factorization.

39654953138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15875932.

The product of its digits is 10497600, while the sum is 56.

The spelling of 39654953138 in words is "thirty-nine billion, six hundred fifty-four million, nine hundred fifty-three thousand, one hundred thirty-eight".