138514665 has 16 divisors (see below), whose sum is σ = 228773376. Its totient is φ = 71491200.

The previous prime is 138514639. The next prime is 138514711. The reversal of 138514665 is 566415831.

It is not a de Polignac number, because 138514665 - 2⁹ = 138514153 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148476 + ... + 149405.

It is an arithmetic number, because the mean of its divisors is an integer number (14298336).

Almost surely, 2^138514665 is an apocalyptic number.

138514665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138514665 is a deficient number, since it is larger than the sum of its proper divisors (90258711).

138514665 is a wasteful number, since it uses less digits than its factorization.

138514665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297920.

The product of its digits is 86400, while the sum is 39.

The square root of 138514665 is about 11769.2253355945. The cubic root of 138514665 is about 517.4065457045.

The spelling of 138514665 in words is "one hundred thirty-eight million, five hundred fourteen thousand, six hundred sixty-five".