18222327331 has 4 divisors (see below), whose sum is σ = 19624044832. Its totient is φ = 16820609832.

The previous prime is 18222327329. The next prime is 18222327337. The reversal of 18222327331 is 13372322281.

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

It is not a de Polignac number, because 18222327331 - 2¹ = 18222327329 is a prime.

It is a super-2 number, since 2×18222327331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18222327337) 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, 700858731 + ... + 700858756.

It is an arithmetic number, because the mean of its divisors is an integer number (4906011208).

Almost surely, 2^18222327331 is an apocalyptic number.

18222327331 is a deficient number, since it is larger than the sum of its proper divisors (1401717501).

18222327331 is a wasteful number, since it uses less digits than its factorization.

18222327331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401717500.

The product of its digits is 24192, while the sum is 34.

The spelling of 18222327331 in words is "eighteen billion, two hundred twenty-two million, three hundred twenty-seven thousand, three hundred thirty-one".