138267775 has 12 divisors (see below), whose sum is σ = 173624800. Its totient is φ = 109212480.

The previous prime is 138267763. The next prime is 138267793. The reversal of 138267775 is 577762831.

It is not a de Polignac number, because 138267775 - 2¹¹ = 138265727 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 33030 + ... + 36979.

Almost surely, 2^138267775 is an apocalyptic number.

138267775 is a deficient number, since it is larger than the sum of its proper divisors (35357025).

138267775 is an equidigital number, since it uses as much as digits as its factorization.

138267775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70098 (or 70093 counting only the distinct ones).

The product of its digits is 493920, while the sum is 46.

The square root of 138267775 is about 11758.7318618974. The cubic root of 138267775 is about 517.0989525847.

The spelling of 138267775 in words is "one hundred thirty-eight million, two hundred sixty-seven thousand, seven hundred seventy-five".