138338862 has 16 divisors (see below), whose sum is σ = 276832080. Its totient is φ = 46087232.

The previous prime is 138338861. The next prime is 138338873. The reversal of 138338862 is 268833831.

138338862 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138338861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7564 + ... + 18272.

It is an arithmetic number, because the mean of its divisors is an integer number (17302005).

Almost surely, 2^138338862 is an apocalyptic number.

138338862 is an abundant number, since it is smaller than the sum of its proper divisors (138493218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138338862 is a wasteful number, since it uses less digits than its factorization.

138338862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12867.

The product of its digits is 165888, while the sum is 42.

The square root of 138338862 is about 11761.7542058997. The cubic root of 138338862 is about 517.1875553351.

The spelling of 138338862 in words is "one hundred thirty-eight million, three hundred thirty-eight thousand, eight hundred sixty-two".