18007193 has 4 divisors (see below), whose sum is σ = 18954960. Its totient is φ = 17059428.

The previous prime is 18007169. The next prime is 18007201. The reversal of 18007193 is 39170081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18007193 - 2¹⁴ = 17990809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18007133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473855 + ... + 473892.

It is an arithmetic number, because the mean of its divisors is an integer number (4738740).

Almost surely, 2^18007193 is an apocalyptic number.

It is an amenable number.

18007193 is a deficient number, since it is larger than the sum of its proper divisors (947767).

18007193 is an equidigital number, since it uses as much as digits as its factorization.

18007193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947766.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 18007193 is about 4243.4883056278. The cubic root of 18007193 is about 262.1090440179.

The spelling of 18007193 in words is "eighteen million, seven thousand, one hundred ninety-three".