18801161 has 8 divisors (see below), whose sum is σ = 19152000. Its totient is φ = 18453600.

The previous prime is 18801157. The next prime is 18801187. The reversal of 18801161 is 16110881.

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

It is a cyclic number.

It is not a de Polignac number, because 18801161 - 2² = 18801157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18801161.

It is not an unprimeable number, because it can be changed into a prime (18801961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12740 + ... + 14138.

It is an arithmetic number, because the mean of its divisors is an integer number (2394000).

Almost surely, 2^18801161 is an apocalyptic number.

It is an amenable number.

18801161 is a deficient number, since it is larger than the sum of its proper divisors (350839).

18801161 is a wasteful number, since it uses less digits than its factorization.

18801161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639.

The product of its (nonzero) digits is 384, while the sum is 26.

The square root of 18801161 is about 4336.0305580104. The cubic root of 18801161 is about 265.9060525260.

The spelling of 18801161 in words is "eighteen million, eight hundred one thousand, one hundred sixty-one".