202138618913 has 24 divisors (see below), whose sum is σ = 261975129984. Its totient is φ = 154159303200.

The previous prime is 202138618873. The next prime is 202138618919. The reversal of 202138618913 is 319816831202.

It is not a de Polignac number, because 202138618913 - 2²⁸ = 201870183457 is a prime.

It is a Duffinian number.

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 23 ways as a sum of consecutive naturals, for example, 3964298 + ... + 4014963.

It is an arithmetic number, because the mean of its divisors is an integer number (10915630416).

Almost surely, 2^202138618913 is an apocalyptic number.

It is an amenable number.

202138618913 is a deficient number, since it is larger than the sum of its proper divisors (59836511071).

202138618913 is a wasteful number, since it uses less digits than its factorization.

202138618913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7979333 (or 7979326 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 202138618913 in words is "two hundred two billion, one hundred thirty-eight million, six hundred eighteen thousand, nine hundred thirteen".