18222611013 has 16 divisors (see below), whose sum is σ = 27927374400. Its totient is φ = 11729496240.

The previous prime is 18222611009. The next prime is 18222611039. The reversal of 18222611013 is 31011622281.

18222611013 is a `hidden beast` number, since 18 + 2 + 22 + 611 + 0 + 13 = 666.

It is not a de Polignac number, because 18222611013 - 2² = 18222611009 is a prime.

It is a super-2 number, since 2×18222611013² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18222611093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11635623 + ... + 11637188.

It is an arithmetic number, because the mean of its divisors is an integer number (1745460900).

Almost surely, 2^18222611013 is an apocalyptic number.

It is an amenable number.

18222611013 is a deficient number, since it is larger than the sum of its proper divisors (9704763387).

18222611013 is a wasteful number, since it uses less digits than its factorization.

18222611013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23272849 (or 23272843 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 18222611013 in words is "eighteen billion, two hundred twenty-two million, six hundred eleven thousand, thirteen".