39638613974 has 8 divisors (see below), whose sum is σ = 59530344768. Its totient is φ = 19795165720.

The previous prime is 39638613943. The next prime is 39638613991. The reversal of 39638613974 is 47931683693.

It is a happy number.

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

It is a congruent number.

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, 12068582 + ... + 12071865.

It is an arithmetic number, because the mean of its divisors is an integer number (7441293096).

Almost surely, 2^39638613974 is an apocalyptic number.

39638613974 is a deficient number, since it is larger than the sum of its proper divisors (19891730794).

39638613974 is a wasteful number, since it uses less digits than its factorization.

39638613974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24141270.

The product of its digits is 17635968, while the sum is 59.

The spelling of 39638613974 in words is "thirty-nine billion, six hundred thirty-eight million, six hundred thirteen thousand, nine hundred seventy-four".