39081967938 has 32 divisors (see below), whose sum is σ = 93529497600. Its totient is φ = 12025220688.

The previous prime is 39081967921. The next prime is 39081967957. The reversal of 39081967938 is 83976918093.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27835458 + ... + 27836861.

It is an arithmetic number, because the mean of its divisors is an integer number (2922796800).

Almost surely, 2^39081967938 is an apocalyptic number.

39081967938 is an abundant number, since it is smaller than the sum of its proper divisors (54447529662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39081967938 is a wasteful number, since it uses less digits than its factorization.

39081967938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55672343 (or 55672337 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 63.

The spelling of 39081967938 in words is "thirty-nine billion, eighty-one million, nine hundred sixty-seven thousand, nine hundred thirty-eight".