138389310 has 40 divisors (see below), whose sum is σ = 372115656. Its totient is φ = 36903600.

The previous prime is 138389267. The next prime is 138389347. The reversal of 138389310 is 13983831.

It is a super-2 number, since 2×138389310² = 38303202244552200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 84616 + ... + 86235.

Almost surely, 2^138389310 is an apocalyptic number.

138389310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138389310 is an abundant number, since it is smaller than the sum of its proper divisors (233726346).

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

138389310 is a wasteful number, since it uses less digits than its factorization.

138389310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170870 (or 170861 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 138389310 is about 11763.8985884782. The cubic root of 138389310 is about 517.2504152490.

The spelling of 138389310 in words is "one hundred thirty-eight million, three hundred eighty-nine thousand, three hundred ten".