18266318401 has 32 divisors (see below), whose sum is σ = 20167056000. Its totient is φ = 16482885120.

The previous prime is 18266318377. The next prime is 18266318407. The reversal of 18266318401 is 10481366281.

It is a cyclic number.

It is not a de Polignac number, because 18266318401 - 2²³ = 18257929793 is a prime.

It is a super-2 number, since 2×18266318401² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18266318407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9371175 + ... + 9373123.

It is an arithmetic number, because the mean of its divisors is an integer number (630220500).

Almost surely, 2^18266318401 is an apocalyptic number.

It is an amenable number.

18266318401 is a deficient number, since it is larger than the sum of its proper divisors (1900737599).

18266318401 is a wasteful number, since it uses less digits than its factorization.

18266318401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289.

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 18266318401 in words is "eighteen billion, two hundred sixty-six million, three hundred eighteen thousand, four hundred one".