18736968297 has 4 divisors (see below), whose sum is σ = 24982624400. Its totient is φ = 12491312196.

The previous prime is 18736968293. The next prime is 18736968317. The reversal of 18736968297 is 79286963781.

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 not a de Polignac number, because 18736968297 - 2² = 18736968293 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18736968293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3122828047 + ... + 3122828052.

It is an arithmetic number, because the mean of its divisors is an integer number (6245656100).

Almost surely, 2^18736968297 is an apocalyptic number.

It is an amenable number.

18736968297 is a deficient number, since it is larger than the sum of its proper divisors (6245656103).

18736968297 is an equidigital number, since it uses as much as digits as its factorization.

18736968297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6245656102.

The product of its digits is 54867456, while the sum is 66.

The spelling of 18736968297 in words is "eighteen billion, seven hundred thirty-six million, nine hundred sixty-eight thousand, two hundred ninety-seven".