138081746 has 16 divisors (see below), whose sum is σ = 228192768. Its totient is φ = 62142000.

The previous prime is 138081739. The next prime is 138081751. The reversal of 138081746 is 647180831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28850 + ... + 33293.

It is an arithmetic number, because the mean of its divisors is an integer number (14262048).

Almost surely, 2^138081746 is an apocalyptic number.

138081746 is a deficient number, since it is larger than the sum of its proper divisors (90111022).

138081746 is a wasteful number, since it uses less digits than its factorization.

138081746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62257.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 138081746 is about 11750.8189501839. The cubic root of 138081746 is about 516.8669424518.

The spelling of 138081746 in words is "one hundred thirty-eight million, eighty-one thousand, seven hundred forty-six".