18848197 has 4 divisors (see below), whose sum is σ = 18996736. Its totient is φ = 18699660.

The previous prime is 18848191. The next prime is 18848213. The reversal of 18848197 is 79184881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18848197 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 (18848191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74079 + ... + 74332.

It is an arithmetic number, because the mean of its divisors is an integer number (4749184).

Almost surely, 2^18848197 is an apocalyptic number.

It is an amenable number.

18848197 is a deficient number, since it is larger than the sum of its proper divisors (148539).

18848197 is a wasteful number, since it uses less digits than its factorization.

18848197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148538.

The product of its digits is 129024, while the sum is 46.

The square root of 18848197 is about 4341.4510247151. The cubic root of 18848197 is about 266.1276122759.

The spelling of 18848197 in words is "eighteen million, eight hundred forty-eight thousand, one hundred ninety-seven".