18364207 has 4 divisors (see below), whose sum is σ = 18373456. Its totient is φ = 18354960.

The previous prime is 18364201. The next prime is 18364217. The reversal of 18364207 is 70246381.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 70246381 = 29 ⋅2422289.

It is a cyclic number.

It is not a de Polignac number, because 18364207 - 2²³ = 9975599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18364201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294 + ... + 6067.

It is an arithmetic number, because the mean of its divisors is an integer number (4593364).

Almost surely, 2^18364207 is an apocalyptic number.

18364207 is a deficient number, since it is larger than the sum of its proper divisors (9249).

18364207 is an equidigital number, since it uses as much as digits as its factorization.

18364207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9248.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 18364207 is about 4285.3479438664. The cubic root of 18364207 is about 263.8299285319.

The spelling of 18364207 in words is "eighteen million, three hundred sixty-four thousand, two hundred seven".