18227621359 has 8 divisors (see below), whose sum is σ = 18275886720. Its totient is φ = 18179405856.

The previous prime is 18227621333. The next prime is 18227621383. The reversal of 18227621359 is 95312672281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18227621359 - 2²⁷ = 18093403631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18227621759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786177 + ... + 809029.

It is an arithmetic number, because the mean of its divisors is an integer number (2284485840).

Almost surely, 2^18227621359 is an apocalyptic number.

18227621359 is a deficient number, since it is larger than the sum of its proper divisors (48265361).

18227621359 is a wasteful number, since it uses less digits than its factorization.

18227621359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24929.

The product of its digits is 362880, while the sum is 46.

The spelling of 18227621359 in words is "eighteen billion, two hundred twenty-seven million, six hundred twenty-one thousand, three hundred fifty-nine".