18197801714 has 4 divisors (see below), whose sum is σ = 27296702574. Its totient is φ = 9098900856.

The previous prime is 18197801701. The next prime is 18197801729. The reversal of 18197801714 is 41710879181.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17113087489 + 1084714225 = 130817^2 + 32935^2 .

It is a super-2 number, since 2×18197801714² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4549450427 + ... + 4549450430.

Almost surely, 2^18197801714 is an apocalyptic number.

18197801714 is a deficient number, since it is larger than the sum of its proper divisors (9098900860).

18197801714 is an equidigital number, since it uses as much as digits as its factorization.

18197801714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9098900859.

The product of its (nonzero) digits is 112896, while the sum is 47.

The spelling of 18197801714 in words is "eighteen billion, one hundred ninety-seven million, eight hundred one thousand, seven hundred fourteen".