18533472722 has 4 divisors (see below), whose sum is σ = 27800209086. Its totient is φ = 9266736360.

The previous prime is 18533472719. The next prime is 18533472809. The reversal of 18533472722 is 22727433581.

18533472722 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15052590721 + 3480882001 = 122689^2 + 58999^2 .

It is a super-2 number, since 2×18533472722² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4633368179 + ... + 4633368182.

Almost surely, 2^18533472722 is an apocalyptic number.

18533472722 is a deficient number, since it is larger than the sum of its proper divisors (9266736364).

18533472722 is an equidigital number, since it uses as much as digits as its factorization.

18533472722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9266736363.

The product of its digits is 564480, while the sum is 44.

The spelling of 18533472722 in words is "eighteen billion, five hundred thirty-three million, four hundred seventy-two thousand, seven hundred twenty-two".