138774111 has 32 divisors (see below), whose sum is σ = 233653248. Its totient is φ = 71385600.

The previous prime is 138774107. The next prime is 138774121. The reversal of 138774111 is 111477831.

It is not a de Polignac number, because 138774111 - 2² = 138774107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138774121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240 + ... + 16661.

It is an arithmetic number, because the mean of its divisors is an integer number (7301664).

Almost surely, 2^138774111 is an apocalyptic number.

138774111 is a deficient number, since it is larger than the sum of its proper divisors (94879137).

138774111 is a wasteful number, since it uses less digits than its factorization.

138774111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16951.

The product of its digits is 4704, while the sum is 33.

The square root of 138774111 is about 11780.2423998829. The cubic root of 138774111 is about 517.7293883755.

The spelling of 138774111 in words is "one hundred thirty-eight million, seven hundred seventy-four thousand, one hundred eleven".