18223133 has 16 divisors (see below), whose sum is σ = 20136960. Its totient is φ = 16416000.

The previous prime is 18223097. The next prime is 18223141. The reversal of 18223133 is 33132281.

It is a cyclic number.

It is not a de Polignac number, because 18223133 - 2¹⁰ = 18222109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18223099 and 18223108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18223193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79463 + ... + 79691.

It is an arithmetic number, because the mean of its divisors is an integer number (1258560).

Almost surely, 2^18223133 is an apocalyptic number.

It is an amenable number.

18223133 is a deficient number, since it is larger than the sum of its proper divisors (1913827).

18223133 is a wasteful number, since it uses less digits than its factorization.

18223133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428.

The product of its digits is 864, while the sum is 23.

The square root of 18223133 is about 4268.8561699828. The cubic root of 18223133 is about 263.1526098918.

The spelling of 18223133 in words is "eighteen million, two hundred twenty-three thousand, one hundred thirty-three".