18612222441 has 4 divisors (see below), whose sum is σ = 24816296592. Its totient is φ = 12408148292.

The previous prime is 18612222379. The next prime is 18612222493. The reversal of 18612222441 is 14422221681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18612222441 - 2¹⁷ = 18612091369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18612222841) 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, 3102037071 + ... + 3102037076.

It is an arithmetic number, because the mean of its divisors is an integer number (6204074148).

Almost surely, 2^18612222441 is an apocalyptic number.

It is an amenable number.

18612222441 is a deficient number, since it is larger than the sum of its proper divisors (6204074151).

18612222441 is an equidigital number, since it uses as much as digits as its factorization.

18612222441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6204074150.

The product of its digits is 12288, while the sum is 33.

The spelling of 18612222441 in words is "eighteen billion, six hundred twelve million, two hundred twenty-two thousand, four hundred forty-one".