18001970183 has 4 divisors (see below), whose sum is σ = 18002508168. Its totient is φ = 18001432200.

The previous prime is 18001970179. The next prime is 18001970209. The reversal of 18001970183 is 38107910081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38107910081 = 43 ⋅886230467.

It is a cyclic number.

It is not a de Polignac number, because 18001970183 - 2² = 18001970179 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18001970143) 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, 215216 + ... + 286917.

It is an arithmetic number, because the mean of its divisors is an integer number (4500627042).

Almost surely, 2^18001970183 is an apocalyptic number.

18001970183 is a deficient number, since it is larger than the sum of its proper divisors (537985).

18001970183 is an equidigital number, since it uses as much as digits as its factorization.

18001970183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537984.

The product of its (nonzero) digits is 12096, while the sum is 38.

The spelling of 18001970183 in words is "eighteen billion, one million, nine hundred seventy thousand, one hundred eighty-three".