18345161 has 8 divisors (see below), whose sum is σ = 18573984. Its totient is φ = 18118080.

The previous prime is 18345157. The next prime is 18345167. The reversal of 18345161 is 16154381.

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 18345161 - 2² = 18345157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18345167) 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, 39050 + ... + 39516.

It is an arithmetic number, because the mean of its divisors is an integer number (2321748).

Almost surely, 2^18345161 is an apocalyptic number.

It is an amenable number.

18345161 is a deficient number, since it is larger than the sum of its proper divisors (228823).

18345161 is a wasteful number, since it uses less digits than its factorization.

18345161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871.

The product of its digits is 2880, while the sum is 29.

The square root of 18345161 is about 4283.1251440975. The cubic root of 18345161 is about 263.7386886728.

The spelling of 18345161 in words is "eighteen million, three hundred forty-five thousand, one hundred sixty-one".