138900202 has 12 divisors (see below), whose sum is σ = 242366850. Its totient is φ = 59528616.

The previous prime is 138900199. The next prime is 138900221. The reversal of 138900202 is 202009831.

138900202 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 only one way, i.e., 138791961 + 108241 = 11781^2 + 329^2 .

It is a super-2 number, since 2×138900202² = 38586532231281608, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 708577 + ... + 708772.

Almost surely, 2^138900202 is an apocalyptic number.

138900202 is a deficient number, since it is larger than the sum of its proper divisors (103466648).

138900202 is a wasteful number, since it uses less digits than its factorization.

138900202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417365 (or 1417358 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 138900202 is about 11785.5929846572. The cubic root of 138900202 is about 517.8861449305.

The spelling of 138900202 in words is "one hundred thirty-eight million, nine hundred thousand, two hundred two".