18256808348 has 18 divisors (see below), whose sum is σ = 33340886376. Its totient is φ = 8730897208.

The previous prime is 18256808329. The next prime is 18256808447. The reversal of 18256808348 is 84380865281.

It is a super-2 number, since 2×18256808348² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18256808348.

It is a congruent number.

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, 1288961 + ... + 1303047.

Almost surely, 2^18256808348 is an apocalyptic number.

It is an amenable number.

18256808348 is a deficient number, since it is larger than the sum of its proper divisors (15084078028).

18256808348 is an frugal number, since it uses more digits than its factorization.

18256808348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28201 (or 14112 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 53.

The spelling of 18256808348 in words is "eighteen billion, two hundred fifty-six million, eight hundred eight thousand, three hundred forty-eight".