18226373 has 16 divisors (see below), whose sum is σ = 21105792. Its totient is φ = 15576000.

The previous prime is 18226361. The next prime is 18226381. The reversal of 18226373 is 37362281.

It is a happy number.

It is not a de Polignac number, because 18226373 - 2⁶ = 18226309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18226393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14843 + ... + 16023.

It is an arithmetic number, because the mean of its divisors is an integer number (1319112).

Almost surely, 2^18226373 is an apocalyptic number.

It is an amenable number.

18226373 is a deficient number, since it is larger than the sum of its proper divisors (2879419).

18226373 is a wasteful number, since it uses less digits than its factorization.

18226373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276.

The product of its digits is 12096, while the sum is 32.

The square root of 18226373 is about 4269.2356458739. The cubic root of 18226373 is about 263.1682047940.

The spelling of 18226373 in words is "eighteen million, two hundred twenty-six thousand, three hundred seventy-three".