138410668 has 48 divisors (see below), whose sum is σ = 294537600. Its totient is φ = 56090880.

The previous prime is 138410663. The next prime is 138410681. The reversal of 138410668 is 866014831.

It is not an unprimeable number, because it can be changed into a prime (138410663) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9343 + ... + 19081.

It is an arithmetic number, because the mean of its divisors is an integer number (6136200).

Almost surely, 2^138410668 is an apocalyptic number.

It is an amenable number.

138410668 is an abundant number, since it is smaller than the sum of its proper divisors (156126932).

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

138410668 is a wasteful number, since it uses less digits than its factorization.

138410668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9790 (or 9788 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 138410668 is about 11764.8063307477. The cubic root of 138410668 is about 517.2770234365.

The spelling of 138410668 in words is "one hundred thirty-eight million, four hundred ten thousand, six hundred sixty-eight".