18226983 has 16 divisors (see below), whose sum is σ = 24966656. Its totient is φ = 11823840.

The previous prime is 18226951. The next prime is 18226987. The reversal of 18226983 is 38962281.

It is a happy number.

It is not a de Polignac number, because 18226983 - 2⁵ = 18226951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18226987) 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 in 15 ways as a sum of consecutive naturals, for example, 18366 + ... + 19332.

It is an arithmetic number, because the mean of its divisors is an integer number (1560416).

Almost surely, 2^18226983 is an apocalyptic number.

18226983 is a deficient number, since it is larger than the sum of its proper divisors (6739673).

18226983 is a wasteful number, since it uses less digits than its factorization.

18226983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134.

The product of its digits is 41472, while the sum is 39.

The square root of 18226983 is about 4269.3070866360. The cubic root of 18226983 is about 263.1711406645.

The spelling of 18226983 in words is "eighteen million, two hundred twenty-six thousand, nine hundred eighty-three".