18422123 has 2 divisors, whose sum is σ = 18422124. Its totient is φ = 18422122.

The previous prime is 18422113. The next prime is 18422147. The reversal of 18422123 is 32122481.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18422123 - 2⁸ = 18421867 is a prime.

It is not a weakly prime, because it can be changed into another prime (18422113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9211061 + 9211062.

It is an arithmetic number, because the mean of its divisors is an integer number (9211062).

Almost surely, 2^18422123 is an apocalyptic number.

18422123 is a deficient number, since it is larger than the sum of its proper divisors (1).

18422123 is an equidigital number, since it uses as much as digits as its factorization.

18422123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 23.

The square root of 18422123 is about 4292.1000687309. The cubic root of 18422123 is about 264.1069881255.

The spelling of 18422123 in words is "eighteen million, four hundred twenty-two thousand, one hundred twenty-three".