138500667 has 24 divisors (see below), whose sum is σ = 204272640. Its totient is φ = 90408240.

The previous prime is 138500629. The next prime is 138500699. The reversal of 138500667 is 766005831.

It is not a de Polignac number, because 138500667 - 2⁶ = 138500603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138500267) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92398 + ... + 93884.

It is an arithmetic number, because the mean of its divisors is an integer number (8511360).

Almost surely, 2^138500667 is an apocalyptic number.

138500667 is a deficient number, since it is larger than the sum of its proper divisors (65771973).

138500667 is a wasteful number, since it uses less digits than its factorization.

138500667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1703 (or 1700 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 138500667 is about 11768.6306340203. The cubic root of 138500667 is about 517.3891157792.

The spelling of 138500667 in words is "one hundred thirty-eight million, five hundred thousand, six hundred sixty-seven".