18093983 has 2 divisors, whose sum is σ = 18093984. Its totient is φ = 18093982.

The previous prime is 18093961. The next prime is 18093991. The reversal of 18093983 is 38939081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18093983 - 2¹⁶ = 18028447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18093983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18093683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9046991 + 9046992.

It is an arithmetic number, because the mean of its divisors is an integer number (9046992).

Almost surely, 2^18093983 is an apocalyptic number.

18093983 is a deficient number, since it is larger than the sum of its proper divisors (1).

18093983 is an equidigital number, since it uses as much as digits as its factorization.

18093983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 18093983 is about 4253.7022697880. The cubic root of 18093983 is about 262.5294684982.

The spelling of 18093983 in words is "eighteen million, ninety-three thousand, nine hundred eighty-three".