138037692 has 24 divisors (see below), whose sum is σ = 346864336. Its totient is φ = 42473088.

The previous prime is 138037681. The next prime is 138037729. The reversal of 138037692 is 296730831.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 138037692.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442273 + ... + 442584.

Almost surely, 2^138037692 is an apocalyptic number.

138037692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138037692 is an abundant number, since it is smaller than the sum of its proper divisors (208826644).

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

138037692 is a wasteful number, since it uses less digits than its factorization.

138037692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884877 (or 884875 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 138037692 is about 11748.9442929993. The cubic root of 138037692 is about 516.8119690298.

The spelling of 138037692 in words is "one hundred thirty-eight million, thirty-seven thousand, six hundred ninety-two".