18370374209 has 16 divisors (see below), whose sum is σ = 20113277184. Its totient is φ = 16639708800.

The previous prime is 18370374161. The next prime is 18370374223. The reversal of 18370374209 is 90247307381.

It is not a de Polignac number, because 18370374209 - 2¹² = 18370370113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18370374209.

It is not an unprimeable number, because it can be changed into a prime (18370374259) 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, 7675517 + ... + 7677909.

It is an arithmetic number, because the mean of its divisors is an integer number (1257079824).

Almost surely, 2^18370374209 is an apocalyptic number.

It is an amenable number.

18370374209 is a deficient number, since it is larger than the sum of its proper divisors (1742902975).

18370374209 is a wasteful number, since it uses less digits than its factorization.

18370374209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648.

The product of its (nonzero) digits is 254016, while the sum is 44.

The spelling of 18370374209 in words is "eighteen billion, three hundred seventy million, three hundred seventy-four thousand, two hundred nine".