18799197 has 8 divisors (see below), whose sum is σ = 25677120. Its totient is φ = 12227040.

The previous prime is 18799177. The next prime is 18799199. The reversal of 18799197 is 79199781.

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

It is not a de Polignac number, because 18799197 - 2¹⁸ = 18537053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18799199) 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, 76297 + ... + 76542.

It is an arithmetic number, because the mean of its divisors is an integer number (3209640).

Almost surely, 2^18799197 is an apocalyptic number.

It is an amenable number.

18799197 is a deficient number, since it is larger than the sum of its proper divisors (6877923).

18799197 is a wasteful number, since it uses less digits than its factorization.

18799197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152883.

The product of its digits is 285768, while the sum is 51.

The square root of 18799197 is about 4335.8040776769. The cubic root of 18799197 is about 265.8967932099.

The spelling of 18799197 in words is "eighteen million, seven hundred ninety-nine thousand, one hundred ninety-seven".