138083911 has 30 divisors (see below), whose sum is σ = 171981400. Its totient is φ = 110835648.

The previous prime is 138083909. The next prime is 138083917. The reversal of 138083911 is 119380831.

It is a happy number.

It is not a de Polignac number, because 138083911 - 2¹ = 138083909 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138083917) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 693790 + ... + 693988.

Almost surely, 2^138083911 is an apocalyptic number.

138083911 is a deficient number, since it is larger than the sum of its proper divisors (33897489).

138083911 is an frugal number, since it uses more digits than its factorization.

138083911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 223 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 138083911 is about 11750.9110710617. The cubic root of 138083911 is about 516.8696437769.

The spelling of 138083911 in words is "one hundred thirty-eight million, eighty-three thousand, nine hundred eleven".