138962818 has 8 divisors (see below), whose sum is σ = 211977360. Its totient is φ = 68303700.

The previous prime is 138962779. The next prime is 138962821. The reversal of 138962818 is 818269831.

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

It is a super-2 number, since 2×138962818² = 38621329573002248, which contains 22 as substring.

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, 588708 + ... + 588943.

It is an arithmetic number, because the mean of its divisors is an integer number (26497170).

Almost surely, 2^138962818 is an apocalyptic number.

138962818 is a deficient number, since it is larger than the sum of its proper divisors (73014542).

138962818 is a wasteful number, since it uses less digits than its factorization.

138962818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177712.

The product of its digits is 165888, while the sum is 46.

The square root of 138962818 is about 11788.2491490467. The cubic root of 138962818 is about 517.9639540020.

The spelling of 138962818 in words is "one hundred thirty-eight million, nine hundred sixty-two thousand, eight hundred eighteen".