18793197 has 6 divisors (see below), whose sum is σ = 27145742. Its totient is φ = 12528792.

The previous prime is 18793183. The next prime is 18793207. The reversal of 18793197 is 79139781.

It can be written as a sum of positive squares in only one way, i.e., 18198756 + 594441 = 4266^2 + 771^2 .

It is not a de Polignac number, because 18793197 - 2⁶ = 18793133 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 (18793157) 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, 1044058 + ... + 1044075.

Almost surely, 2^18793197 is an apocalyptic number.

It is an amenable number.

18793197 is a deficient number, since it is larger than the sum of its proper divisors (8352545).

18793197 is a wasteful number, since it uses less digits than its factorization.

18793197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088139 (or 2088136 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The square root of 18793197 is about 4335.1121092770. The cubic root of 18793197 is about 265.8685020988.

The spelling of 18793197 in words is "eighteen million, seven hundred ninety-three thousand, one hundred ninety-seven".