18207012369 has 72 divisors (see below), whose sum is σ = 30969221760. Its totient is φ = 9481110912.

The previous prime is 18207012331. The next prime is 18207012379. The reversal of 18207012369 is 96321070281.

It is not a de Polignac number, because 18207012369 - 2¹² = 18207008273 is a prime.

It is a super-2 number, since 2×18207012369² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (18207012379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1957959 + ... + 1967235.

It is an arithmetic number, because the mean of its divisors is an integer number (430128080).

Almost surely, 2^18207012369 is an apocalyptic number.

It is an amenable number.

18207012369 is a deficient number, since it is larger than the sum of its proper divisors (12762209391).

18207012369 is a wasteful number, since it uses less digits than its factorization.

18207012369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9399 (or 9379 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 18207012369 in words is "eighteen billion, two hundred seven million, twelve thousand, three hundred sixty-nine".