138363837 has 16 divisors (see below), whose sum is σ = 194282880. Its totient is φ = 87417792.

The previous prime is 138363803. The next prime is 138363853. The reversal of 138363837 is 738363831.

It is not a de Polignac number, because 138363837 - 2⁶ = 138363773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138363857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1678 + ... + 16719.

It is an arithmetic number, because the mean of its divisors is an integer number (12142680).

Almost surely, 2^138363837 is an apocalyptic number.

It is an amenable number.

138363837 is a deficient number, since it is larger than the sum of its proper divisors (55919043).

138363837 is a wasteful number, since it uses less digits than its factorization.

138363837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18532.

The product of its digits is 217728, while the sum is 42.

The square root of 138363837 is about 11762.8158618589. The cubic root of 138363837 is about 517.2186769394.

The spelling of 138363837 in words is "one hundred thirty-eight million, three hundred sixty-three thousand, eight hundred thirty-seven".