18475197 has 8 divisors (see below), whose sum is σ = 26528544. Its totient is φ = 11369328.

The previous prime is 18475169. The next prime is 18475199. The reversal of 18475197 is 79157481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18475197 - 2¹⁰ = 18474173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18475199) 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, 236823 + ... + 236900.

It is an arithmetic number, because the mean of its divisors is an integer number (3316068).

Almost surely, 2^18475197 is an apocalyptic number.

It is an amenable number.

18475197 is a deficient number, since it is larger than the sum of its proper divisors (8053347).

18475197 is a wasteful number, since it uses less digits than its factorization.

18475197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473739.

The product of its digits is 70560, while the sum is 42.

The square root of 18475197 is about 4298.2783762804. The cubic root of 18475197 is about 264.3603750384.

The spelling of 18475197 in words is "eighteen million, four hundred seventy-five thousand, one hundred ninety-seven".