138259382 has 8 divisors (see below), whose sum is σ = 207439752. Its totient is φ = 69112800.

The previous prime is 138259379. The next prime is 138259393. The reversal of 138259382 is 283952831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×138259382² = 38231313422043848, 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 3 ways as a sum of consecutive naturals, for example, 8957 + ... + 18887.

It is an arithmetic number, because the mean of its divisors is an integer number (25929969).

Almost surely, 2^138259382 is an apocalyptic number.

138259382 is a deficient number, since it is larger than the sum of its proper divisors (69180370).

138259382 is an equidigital number, since it uses as much as digits as its factorization.

138259382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16894.

The product of its digits is 103680, while the sum is 41.

The square root of 138259382 is about 11758.3749727588. The cubic root of 138259382 is about 517.0884895554.

The spelling of 138259382 in words is "one hundred thirty-eight million, two hundred fifty-nine thousand, three hundred eighty-two".