18202838201 has 4 divisors (see below), whose sum is σ = 18204284532. Its totient is φ = 18201391872.

The previous prime is 18202838197. The next prime is 18202838207. The reversal of 18202838201 is 10283820281.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11613295225 + 6589542976 = 107765^2 + 81176^2 .

It is a cyclic number.

It is not a de Polignac number, because 18202838201 - 2² = 18202838197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18202838207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704120 + ... + 729513.

It is an arithmetic number, because the mean of its divisors is an integer number (4551071133).

Almost surely, 2^18202838201 is an apocalyptic number.

It is an amenable number.

18202838201 is a deficient number, since it is larger than the sum of its proper divisors (1446331).

18202838201 is a wasteful number, since it uses less digits than its factorization.

18202838201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446330.

The product of its (nonzero) digits is 12288, while the sum is 35.

The spelling of 18202838201 in words is "eighteen billion, two hundred two million, eight hundred thirty-eight thousand, two hundred one".