202138618914 has 24 divisors (see below), whose sum is σ = 438284199132. Its totient is φ = 67330740960.

The previous prime is 202138618873. The next prime is 202138618919. The reversal of 202138618914 is 419816831202.

202138618914 is a `hidden beast` number, since 2 + 0 + 2 + 13 + 8 + 618 + 9 + 14 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 175421081889 + 26717537025 = 418833^2 + 163455^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 202138618914.

It is not an unprimeable number, because it can be changed into a prime (202138618919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4041009 + ... + 4090724.

Almost surely, 2^202138618914 is an apocalyptic number.

202138618914 is an abundant number, since it is smaller than the sum of its proper divisors (236145580218).

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

202138618914 is a wasteful number, since it uses less digits than its factorization.

202138618914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8133122 (or 8133119 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 202138618914 in words is "two hundred two billion, one hundred thirty-eight million, six hundred eighteen thousand, nine hundred fourteen".