18376874233 has 4 divisors (see below), whose sum is σ = 19344078160. Its totient is φ = 17409670308.

The previous prime is 18376874227. The next prime is 18376874261. The reversal of 18376874233 is 33247867381.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33247867381 = 31 ⋅1072511851.

It is a cyclic number.

It is not a de Polignac number, because 18376874233 - 2¹³ = 18376866041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18376874333) 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, 483601935 + ... + 483601972.

It is an arithmetic number, because the mean of its divisors is an integer number (4836019540).

Almost surely, 2^18376874233 is an apocalyptic number.

It is an amenable number.

18376874233 is a deficient number, since it is larger than the sum of its proper divisors (967203927).

18376874233 is an equidigital number, since it uses as much as digits as its factorization.

18376874233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967203926.

The product of its digits is 4064256, while the sum is 52.

The spelling of 18376874233 in words is "eighteen billion, three hundred seventy-six million, eight hundred seventy-four thousand, two hundred thirty-three".