18168097 has 4 divisors (see below), whose sum is σ = 18277056. Its totient is φ = 18059140.

The previous prime is 18168083. The next prime is 18168109. The reversal of 18168097 is 79086181.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79086181 = 103 ⋅767827.

It is a cyclic number.

It is not a de Polignac number, because 18168097 - 2⁷ = 18167969 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18168037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54229 + ... + 54562.

It is an arithmetic number, because the mean of its divisors is an integer number (4569264).

Almost surely, 2^18168097 is an apocalyptic number.

It is an amenable number.

18168097 is a deficient number, since it is larger than the sum of its proper divisors (108959).

18168097 is a wasteful number, since it uses less digits than its factorization.

18168097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108958.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 18168097 is about 4262.4050722567. The cubic root of 18168097 is about 262.8874254961.

The spelling of 18168097 in words is "eighteen million, one hundred sixty-eight thousand, ninety-seven".