18424197 has 12 divisors (see below), whose sum is σ = 29032224. Its totient is φ = 11166120.

The previous prime is 18424181. The next prime is 18424201. The reversal of 18424197 is 79142481.

It is not a de Polignac number, because 18424197 - 2⁴ = 18424181 is a prime.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18424177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92953 + ... + 93150.

It is an arithmetic number, because the mean of its divisors is an integer number (2419352).

Almost surely, 2^18424197 is an apocalyptic number.

It is an amenable number.

18424197 is a deficient number, since it is larger than the sum of its proper divisors (10608027).

18424197 is a wasteful number, since it uses less digits than its factorization.

18424197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186120 (or 186117 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 18424197 is about 4292.3416686000. The cubic root of 18424197 is about 264.1168989872.

The spelling of 18424197 in words is "eighteen million, four hundred twenty-four thousand, one hundred ninety-seven".