18374193 has 12 divisors (see below), whose sum is σ = 26991120. Its totient is φ = 12041496.

The previous prime is 18374189. The next prime is 18374203. The reversal of 18374193 is 39147381.

It is a happy number.

It is not a de Polignac number, because 18374193 - 2² = 18374189 is a prime.

It is a super-2 number, since 2×18374193² = 675221936802498, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18374113) 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 11 ways as a sum of consecutive naturals, for example, 16771 + ... + 17832.

It is an arithmetic number, because the mean of its divisors is an integer number (2249260).

Almost surely, 2^18374193 is an apocalyptic number.

It is an amenable number.

18374193 is a deficient number, since it is larger than the sum of its proper divisors (8616927).

18374193 is a wasteful number, since it uses less digits than its factorization.

18374193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34668 (or 34665 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 18374193 is about 4286.5129184455. The cubic root of 18374193 is about 263.8777412556.

The spelling of 18374193 in words is "eighteen million, three hundred seventy-four thousand, one hundred ninety-three".