138514380 has 24 divisors (see below), whose sum is σ = 387840432. Its totient is φ = 36937152.

The previous prime is 138514379. The next prime is 138514391. The reversal of 138514380 is 83415831.

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, 1154227 + ... + 1154346.

It is an arithmetic number, because the mean of its divisors is an integer number (16160018).

Almost surely, 2^138514380 is an apocalyptic number.

138514380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138514380 is an abundant number, since it is smaller than the sum of its proper divisors (249326052).

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

138514380 is a wasteful number, since it uses less digits than its factorization.

138514380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308585 (or 2308583 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 138514380 is about 11769.2132277396. The cubic root of 138514380 is about 517.4061908420.

The spelling of 138514380 in words is "one hundred thirty-eight million, five hundred fourteen thousand, three hundred eighty".