138837804 has 24 divisors (see below), whose sum is σ = 370234368. Its totient is φ = 39667920.

The previous prime is 138837799. The next prime is 138837817. The reversal of 138837804 is 408738831.

138837804 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 826332 + ... + 826499.

It is an arithmetic number, because the mean of its divisors is an integer number (15426432).

Almost surely, 2^138837804 is an apocalyptic number.

138837804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138837804 is an abundant number, since it is smaller than the sum of its proper divisors (231396564).

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

138837804 is a wasteful number, since it uses less digits than its factorization.

138837804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652845 (or 1652843 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 138837804 is about 11782.9454721644. The cubic root of 138837804 is about 517.8085834886.

The spelling of 138837804 in words is "one hundred thirty-eight million, eight hundred thirty-seven thousand, eight hundred four".