138510630 has 48 divisors (see below), whose sum is σ = 360766224. Its totient is φ = 36870720.

The previous prime is 138510629. The next prime is 138510643. The reversal of 138510630 is 36015831.

138510630 is a `hidden beast` number, since 13 + 8 + 5 + 10 + 630 = 666.

138510630 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 138510594 and 138510603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70765 + ... + 72695.

It is an arithmetic number, because the mean of its divisors is an integer number (7515963).

Almost surely, 2^138510630 is an apocalyptic number.

138510630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138510630 is an abundant number, since it is smaller than the sum of its proper divisors (222255594).

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

138510630 is a wasteful number, since it uses less digits than its factorization.

138510630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741 (or 2738 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 138510630 is about 11769.0539126983. The cubic root of 138510630 is about 517.4015215537.

The spelling of 138510630 in words is "one hundred thirty-eight million, five hundred ten thousand, six hundred thirty".