138332511 has 12 divisors (see below), whose sum is σ = 208501488. Its totient is φ = 88211904.

The previous prime is 138332503. The next prime is 138332527. The reversal of 138332511 is 115233831.

It is not a de Polignac number, because 138332511 - 2³ = 138332503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138332561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333930 + ... + 334343.

It is an arithmetic number, because the mean of its divisors is an integer number (17375124).

Almost surely, 2^138332511 is an apocalyptic number.

138332511 is a deficient number, since it is larger than the sum of its proper divisors (70168977).

138332511 is a wasteful number, since it uses less digits than its factorization.

138332511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668302 (or 668299 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 138332511 is about 11761.4842175637. The cubic root of 138332511 is about 517.1796406913.

The spelling of 138332511 in words is "one hundred thirty-eight million, three hundred thirty-two thousand, five hundred eleven".