18396207 has 8 divisors (see below), whose sum is σ = 27253680. Its totient is φ = 12264120.

The previous prime is 18396187. The next prime is 18396221. The reversal of 18396207 is 70269381.

It is not a de Polignac number, because 18396207 - 2⁶ = 18396143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18396277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340644 + ... + 340697.

It is an arithmetic number, because the mean of its divisors is an integer number (3406710).

Almost surely, 2^18396207 is an apocalyptic number.

18396207 is a deficient number, since it is larger than the sum of its proper divisors (8857473).

18396207 is an equidigital number, since it uses as much as digits as its factorization.

18396207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681350 (or 681344 counting only the distinct ones).

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

The square root of 18396207 is about 4289.0799712759. The cubic root of 18396207 is about 263.9830825936.

The spelling of 18396207 in words is "eighteen million, three hundred ninety-six thousand, two hundred seven".