18059193 has 10 divisors (see below), whose sum is σ = 26977434. Its totient is φ = 12039408.

The previous prime is 18059189. The next prime is 18059201. The reversal of 18059193 is 39195081.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18045504 + 13689 = 4248^2 + 117^2 .

It is not a de Polignac number, because 18059193 - 2² = 18059189 is a prime.

It is a super-2 number, since 2×18059193² = 652268903622498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18059693) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 111396 + ... + 111557.

Almost surely, 2^18059193 is an apocalyptic number.

It is an amenable number.

18059193 is a deficient number, since it is larger than the sum of its proper divisors (8918241).

18059193 is an equidigital number, since it uses as much as digits as its factorization.

18059193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222965 (or 222956 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 18059193 is about 4249.6109233670. The cubic root of 18059193 is about 262.3611020274.

The spelling of 18059193 in words is "eighteen million, fifty-nine thousand, one hundred ninety-three".