138853630 has 16 divisors (see below), whose sum is σ = 251041680. Its totient is φ = 55295872.

The previous prime is 138853613. The next prime is 138853697. The reversal of 138853630 is 36358831.

It is a self number, because there is not a number n which added to its sum of digits gives 138853630.

It is a congruent number.

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, 28315 + ... + 32854.

It is an arithmetic number, because the mean of its divisors is an integer number (15690105).

Almost surely, 2^138853630 is an apocalyptic number.

138853630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138853630 is a deficient number, since it is larger than the sum of its proper divisors (112188050).

138853630 is a wasteful number, since it uses less digits than its factorization.

138853630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61403.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 138853630 is about 11783.6170168586. The cubic root of 138853630 is about 517.8282575905.

The spelling of 138853630 in words is "one hundred thirty-eight million, eight hundred fifty-three thousand, six hundred thirty".