18097096994 has 4 divisors (see below), whose sum is σ = 27145645494. Its totient is φ = 9048548496.

The previous prime is 18097096987. The next prime is 18097097021. The reversal of 18097096994 is 49969079081.

It is a happy number.

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., 16018192969 + 2078904025 = 126563^2 + 45595^2 .

It is a super-2 number, since 2×18097096994² (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, 4524274247 + ... + 4524274250.

Almost surely, 2^18097096994 is an apocalyptic number.

18097096994 is a deficient number, since it is larger than the sum of its proper divisors (9048548500).

18097096994 is an equidigital number, since it uses as much as digits as its factorization.

18097096994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048548499.

The product of its (nonzero) digits is 8817984, while the sum is 62.

The spelling of 18097096994 in words is "eighteen billion, ninety-seven million, ninety-six thousand, nine hundred ninety-four".