18273023 has 2 divisors, whose sum is σ = 18273024. Its totient is φ = 18273022.

The previous prime is 18273019. The next prime is 18273029. The reversal of 18273023 is 32037281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18273023 - 2² = 18273019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18272983 and 18273001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18273029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9136511 + 9136512.

It is an arithmetic number, because the mean of its divisors is an integer number (9136512).

Almost surely, 2^18273023 is an apocalyptic number.

18273023 is a deficient number, since it is larger than the sum of its proper divisors (1).

18273023 is an equidigital number, since it uses as much as digits as its factorization.

18273023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 18273023 is about 4274.6956616817. The cubic root of 18273023 is about 263.3925379175.

The spelling of 18273023 in words is "eighteen million, two hundred seventy-three thousand, twenty-three".