18802791213 has 16 divisors (see below), whose sum is σ = 25598252160. Its totient is φ = 12273997824.

The previous prime is 18802791211. The next prime is 18802791221. The reversal of 18802791213 is 31219720881.

It is not a de Polignac number, because 18802791213 - 2¹ = 18802791211 is a prime.

It is a super-2 number, since 2×18802791213² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18802791211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314356 + ... + 369357.

It is an arithmetic number, because the mean of its divisors is an integer number (1599890760).

Almost surely, 2^18802791213 is an apocalyptic number.

It is an amenable number.

18802791213 is a deficient number, since it is larger than the sum of its proper divisors (6795460947).

18802791213 is a wasteful number, since it uses less digits than its factorization.

18802791213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683908.

The product of its (nonzero) digits is 48384, while the sum is 42.

The spelling of 18802791213 in words is "eighteen billion, eight hundred two million, seven hundred ninety-one thousand, two hundred thirteen".