138596004 has 18 divisors (see below), whose sum is σ = 350339990. Its totient is φ = 46198656.

The previous prime is 138595993. The next prime is 138596011. The reversal of 138596004 is 400695831.

138596004 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 120956004 + 17640000 = 10998^2 + 4200^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3849889 = 138596004 / (1 + 3 + 8 + 5 + 9 + 6 + 0 + 0 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 138596004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1924909 + ... + 1924980.

Almost surely, 2^138596004 is an apocalyptic number.

It is an amenable number.

138596004 is an abundant number, since it is smaller than the sum of its proper divisors (211743986).

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

138596004 is a wasteful number, since it uses less digits than its factorization.

138596004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849899 (or 3849894 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 138596004 is about 11772.6804084711. The cubic root of 138596004 is about 517.5078035650.

The spelling of 138596004 in words is "one hundred thirty-eight million, five hundred ninety-six thousand, four".