138945183 has 16 divisors (see below), whose sum is σ = 200524800. Its totient is φ = 85070304.

The previous prime is 138945181. The next prime is 138945197. The reversal of 138945183 is 381549831.

It is not a de Polignac number, because 138945183 - 2¹ = 138945181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138945181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1191 + ... + 16712.

It is an arithmetic number, because the mean of its divisors is an integer number (12532800).

Almost surely, 2^138945183 is an apocalyptic number.

138945183 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

138945183 is a deficient number, since it is larger than the sum of its proper divisors (61579617).

138945183 is a wasteful number, since it uses less digits than its factorization.

138945183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18118.

The product of its digits is 103680, while the sum is 42.

The square root of 138945183 is about 11787.5011346765. The cubic root of 138945183 is about 517.9420424315.

It can be divided in two parts, 138945 and 183, that added together give a triangular number (139128 = T₅₂₇).

The spelling of 138945183 in words is "one hundred thirty-eight million, nine hundred forty-five thousand, one hundred eighty-three".