138545698 has 16 divisors (see below), whose sum is σ = 217183680. Its totient is φ = 66160336.

The previous prime is 138545689. The next prime is 138545753. The reversal of 138545698 is 896545831.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34773 + ... + 38551.

It is an arithmetic number, because the mean of its divisors is an integer number (13573980).

Almost surely, 2^138545698 is an apocalyptic number.

138545698 is a deficient number, since it is larger than the sum of its proper divisors (78637982).

138545698 is a wasteful number, since it uses less digits than its factorization.

138545698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4601.

The product of its digits is 1036800, while the sum is 49.

The square root of 138545698 is about 11770.5436577925. The cubic root of 138545698 is about 517.4451829573.

The spelling of 138545698 in words is "one hundred thirty-eight million, five hundred forty-five thousand, six hundred ninety-eight".