138748575 has 24 divisors (see below), whose sum is σ = 262169728. Its totient is φ = 63427680.

The previous prime is 138748567. The next prime is 138748601. The reversal of 138748575 is 575847831.

It is a happy number.

It is not a de Polignac number, because 138748575 - 2³ = 138748567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131617 + ... + 132666.

Almost surely, 2^138748575 is an apocalyptic number.

138748575 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138748575 is a deficient number, since it is larger than the sum of its proper divisors (123421153).

138748575 is a wasteful number, since it uses less digits than its factorization.

138748575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264303 (or 264298 counting only the distinct ones).

The product of its digits is 940800, while the sum is 48.

The square root of 138748575 is about 11779.1585013531. The cubic root of 138748575 is about 517.6976304139.

The spelling of 138748575 in words is "one hundred thirty-eight million, seven hundred forty-eight thousand, five hundred seventy-five".