138331802 has 24 divisors (see below), whose sum is σ = 245938356. Its totient is φ = 58164288.

The previous prime is 138331747. The next prime is 138331819. The reversal of 138331802 is 208133831.

138331802 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 111281401 + 27050401 = 10549^2 + 5201^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8123 + ... + 18510.

Almost surely, 2^138331802 is an apocalyptic number.

138331802 is a deficient number, since it is larger than the sum of its proper divisors (107606554).

138331802 is a wasteful number, since it uses less digits than its factorization.

138331802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26702 (or 26695 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 138331802 is about 11761.4540767713. The cubic root of 138331802 is about 517.1787571174.

The spelling of 138331802 in words is "one hundred thirty-eight million, three hundred thirty-one thousand, eight hundred two".