18226958023 has 4 divisors (see below), whose sum is σ = 18227329240. Its totient is φ = 18226586808.

The previous prime is 18226957979. The next prime is 18226958027. The reversal of 18226958023 is 32085962281.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18226958023 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 (18226958027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98253 + ... + 214726.

It is an arithmetic number, because the mean of its divisors is an integer number (4556832310).

Almost surely, 2^18226958023 is an apocalyptic number.

18226958023 is a deficient number, since it is larger than the sum of its proper divisors (371217).

18226958023 is an equidigital number, since it uses as much as digits as its factorization.

18226958023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371216.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 18226958023 in words is "eighteen billion, two hundred twenty-six million, nine hundred fifty-eight thousand, twenty-three".