39430194796638 has 24 divisors (see below), whose sum is σ = 89146527367248. Its totient is φ = 12571946166912.

The previous prime is 39430194796571. The next prime is 39430194796673. The reversal of 39430194796638 is 83669749103493.

39430194796638 is a `hidden beast` number, since 3 + 9 + 430 + 1 + 9 + 47 + 96 + 63 + 8 = 666.

It is a super-2 number, since 2×39430194796638² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47621007795 + ... + 47621008622.

It is an arithmetic number, because the mean of its divisors is an integer number (3714438640302).

Almost surely, 2^{39430194796638} is an apocalyptic number.

39430194796638 is an abundant number, since it is smaller than the sum of its proper divisors (49716332570610).

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

39430194796638 is a wasteful number, since it uses less digits than its factorization.

39430194796638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95242016448 (or 95242016445 counting only the distinct ones).

The product of its (nonzero) digits is 634894848, while the sum is 72.

The spelling of 39430194796638 in words is "thirty-nine trillion, four hundred thirty billion, one hundred ninety-four million, seven hundred ninety-six thousand, six hundred thirty-eight".