18214151522 has 18 divisors (see below), whose sum is σ = 31784167233. Its totient is φ = 7805492352.

The previous prime is 18214151503. The next prime is 18214151537. The reversal of 18214151522 is 22515141281.

It can be written as a sum of positive squares in 2 ways, for example, as 17405261041 + 808890481 = 131929^2 + 28441^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=95431.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1329218 + ... + 1342850.

Almost surely, 2^18214151522 is an apocalyptic number.

18214151522 is a deficient number, since it is larger than the sum of its proper divisors (13570015711).

18214151522 is an frugal number, since it uses more digits than its factorization.

18214151522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27282 (or 13642 counting only the distinct ones).

The product of its digits is 6400, while the sum is 32.

Multiplying 18214151522 by its sum of digits (32), we get a square (582852848704 = 763448²).

The spelling of 18214151522 in words is "eighteen billion, two hundred fourteen million, one hundred fifty-one thousand, five hundred twenty-two".