18472207 has 6 divisors (see below), whose sum is σ = 20002632. Its totient is φ = 17051112.

The previous prime is 18472189. The next prime is 18472247. The reversal of 18472207 is 70227481.

It is not a de Polignac number, because 18472207 - 2¹⁵ = 18439439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18472247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54483 + ... + 54820.

It is an arithmetic number, because the mean of its divisors is an integer number (3333772).

Almost surely, 2^18472207 is an apocalyptic number.

18472207 is a deficient number, since it is larger than the sum of its proper divisors (1530425).

18472207 is a wasteful number, since it uses less digits than its factorization.

18472207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109329 (or 109316 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 18472207 is about 4297.9305485315. The cubic root of 18472207 is about 264.3461130314.

Adding to 18472207 its reverse (70227481), we get a palindrome (88699688).

The spelling of 18472207 in words is "eighteen million, four hundred seventy-two thousand, two hundred seven".