18983423 has 2 divisors, whose sum is σ = 18983424. Its totient is φ = 18983422.

The previous prime is 18983417. The next prime is 18983467. The reversal of 18983423 is 32438981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18983423 - 2⁶ = 18983359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18983473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9491711 + 9491712.

It is an arithmetic number, because the mean of its divisors is an integer number (9491712).

Almost surely, 2^18983423 is an apocalyptic number.

18983423 is a deficient number, since it is larger than the sum of its proper divisors (1).

18983423 is an equidigital number, since it uses as much as digits as its factorization.

18983423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 38.

The square root of 18983423 is about 4356.9970162946. The cubic root of 18983423 is about 266.7625386183.

The spelling of 18983423 in words is "eighteen million, nine hundred eighty-three thousand, four hundred twenty-three".