38406325978 has 8 divisors (see below), whose sum is σ = 59014598580. Its totient is φ = 18734793120.

The previous prime is 38406325939. The next prime is 38406326009. The reversal of 38406325978 is 87952360483.

It can be written as a sum of positive squares in 2 ways, for example, as 38367799129 + 38526849 = 195877^2 + 6207^2 .

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, 234184833 + ... + 234184996.

Almost surely, 2^38406325978 is an apocalyptic number.

38406325978 is a deficient number, since it is larger than the sum of its proper divisors (20608272602).

38406325978 is a wasteful number, since it uses less digits than its factorization.

38406325978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468369872.

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 38406325978 in words is "thirty-eight billion, four hundred six million, three hundred twenty-five thousand, nine hundred seventy-eight".