138430516 has 24 divisors (see below), whose sum is σ = 277978176. Its totient is φ = 59088000.

The previous prime is 138430441. The next prime is 138430519. The reversal of 138430516 is 615034831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138430519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2821 + ... + 16876.

It is an arithmetic number, because the mean of its divisors is an integer number (11582424).

Almost surely, 2^138430516 is an apocalyptic number.

It is an amenable number.

138430516 is an abundant number, since it is smaller than the sum of its proper divisors (139547660).

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

138430516 is a wasteful number, since it uses less digits than its factorization.

138430516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19959 (or 19957 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 138430516 is about 11765.6498333071. The cubic root of 138430516 is about 517.3017479845.

The spelling of 138430516 in words is "one hundred thirty-eight million, four hundred thirty thousand, five hundred sixteen".