138519310 has 24 divisors (see below), whose sum is σ = 263155176. Its totient is φ = 52490160.

The previous prime is 138519301. The next prime is 138519331. The reversal of 138519310 is 13915831.

It is a super-2 number, since 2×138519310² = 38375198485752200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15576 + ... + 22795.

It is an arithmetic number, because the mean of its divisors is an integer number (10964799).

Almost surely, 2^138519310 is an apocalyptic number.

138519310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138519310 is a deficient number, since it is larger than the sum of its proper divisors (124635866).

138519310 is a wasteful number, since it uses less digits than its factorization.

138519310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38416 (or 38397 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 138519310 is about 11769.4226706326. The cubic root of 138519310 is about 517.4123292715.

The spelling of 138519310 in words is "one hundred thirty-eight million, five hundred nineteen thousand, three hundred ten".