138634512 has 40 divisors (see below), whose sum is σ = 358768704. Its totient is φ = 46130304.

The previous prime is 138634487. The next prime is 138634553. The reversal of 138634512 is 215436831.

138634512 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 29133 + ... + 33555.

Almost surely, 2^138634512 is an apocalyptic number.

138634512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138634512 is an abundant number, since it is smaller than the sum of its proper divisors (220134192).

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

138634512 is a wasteful number, since it uses less digits than its factorization.

138634512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5087 (or 5081 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 138634512 is about 11774.3157762989. The cubic root of 138634512 is about 517.5557278547. Note that the first 3 decimals are identical.

The spelling of 138634512 in words is "one hundred thirty-eight million, six hundred thirty-four thousand, five hundred twelve".