18320163 has 8 divisors (see below), whose sum is σ = 25214976. Its totient is φ = 11819400.

The previous prime is 18320117. The next prime is 18320189. The reversal of 18320163 is 36102381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18320163 - 2¹⁶ = 18254627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18320063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98403 + ... + 98588.

It is an arithmetic number, because the mean of its divisors is an integer number (3151872).

Almost surely, 2^18320163 is an apocalyptic number.

18320163 is a deficient number, since it is larger than the sum of its proper divisors (6894813).

18320163 is a wasteful number, since it uses less digits than its factorization.

18320163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197025.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 18320163 is about 4280.2059529887. The cubic root of 18320163 is about 263.6188398722.

The spelling of 18320163 in words is "eighteen million, three hundred twenty thousand, one hundred sixty-three".