38128429904 has 20 divisors (see below), whose sum is σ = 73923492180. Its totient is φ = 19051399680.

The previous prime is 38128429903. The next prime is 38128429919. The reversal of 38128429904 is 40992482183.

It can be written as a sum of positive squares in 2 ways, for example, as 27509539600 + 10618890304 = 165860^2 + 103048^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38128429901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776387 + ... + 824034.

It is an arithmetic number, because the mean of its divisors is an integer number (3696174609).

Almost surely, 2^38128429904 is an apocalyptic number.

It is an amenable number.

38128429904 is a deficient number, since it is larger than the sum of its proper divisors (35795062276).

38128429904 is a wasteful number, since it uses less digits than its factorization.

38128429904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601918 (or 1601912 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 38128429904 in words is "thirty-eight billion, one hundred twenty-eight million, four hundred twenty-nine thousand, nine hundred four".