18425923 has 2 divisors, whose sum is σ = 18425924. Its totient is φ = 18425922.

The previous prime is 18425879. The next prime is 18425929. The reversal of 18425923 is 32952481.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18425923 is a prime.

It is not a weakly prime, because it can be changed into another prime (18425929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9212961 + 9212962.

It is an arithmetic number, because the mean of its divisors is an integer number (9212962).

Almost surely, 2^18425923 is an apocalyptic number.

18425923 is a deficient number, since it is larger than the sum of its proper divisors (1).

18425923 is an equidigital number, since it uses as much as digits as its factorization.

18425923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 18425923 is about 4292.5427196476. The cubic root of 18425923 is about 264.1251463214.

The spelling of 18425923 in words is "eighteen million, four hundred twenty-five thousand, nine hundred twenty-three".