18996297 has 4 divisors (see below), whose sum is σ = 25328400. Its totient is φ = 12664196.

The previous prime is 18996277. The next prime is 18996311. The reversal of 18996297 is 79269981.

It is a happy number.

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 not a de Polignac number, because 18996297 - 2⁶ = 18996233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18996277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3166047 + ... + 3166052.

It is an arithmetic number, because the mean of its divisors is an integer number (6332100).

Almost surely, 2^18996297 is an apocalyptic number.

It is an amenable number.

18996297 is a deficient number, since it is larger than the sum of its proper divisors (6332103).

18996297 is an equidigital number, since it uses as much as digits as its factorization.

18996297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6332102.

The product of its digits is 489888, while the sum is 51.

The square root of 18996297 is about 4358.4741596114. The cubic root of 18996297 is about 266.8228284980.

The spelling of 18996297 in words is "eighteen million, nine hundred ninety-six thousand, two hundred ninety-seven".