18373922 has 18 divisors (see below), whose sum is σ = 32134833. Its totient is φ = 7856352.

The previous prime is 18373921. The next prime is 18373939. The reversal of 18373922 is 22937381.

It can be written as a sum of positive squares in 2 ways, for example, as 14984641 + 3389281 = 3871^2 + 1841^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3031.

It is a super-3 number, since 3×18373922³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18373921) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 42218 + ... + 42650.

Almost surely, 2^18373922 is an apocalyptic number.

18373922 is a deficient number, since it is larger than the sum of its proper divisors (13760911).

18373922 is an frugal number, since it uses more digits than its factorization.

18373922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 442 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 18373922 is about 4286.4813075529. The cubic root of 18373922 is about 263.8764439429.

The spelling of 18373922 in words is "eighteen million, three hundred seventy-three thousand, nine hundred twenty-two".