18801163 has 4 divisors (see below), whose sum is σ = 18817600. Its totient is φ = 18784728.

The previous prime is 18801157. The next prime is 18801187. The reversal of 18801163 is 36110881.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18801163 - 2¹³ = 18792971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18801103) 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, 6363 + ... + 8836.

It is an arithmetic number, because the mean of its divisors is an integer number (4704400).

Almost surely, 2^18801163 is an apocalyptic number.

18801163 is a deficient number, since it is larger than the sum of its proper divisors (16437).

18801163 is a wasteful number, since it uses less digits than its factorization.

18801163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16436.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 18801163 is about 4336.0307886361. The cubic root of 18801163 is about 265.9060619547.

The spelling of 18801163 in words is "eighteen million, eight hundred one thousand, one hundred sixty-three".