18814161 has 32 divisors (see below), whose sum is σ = 28016640. Its totient is φ = 11176704.

The previous prime is 18814151. The next prime is 18814171. The reversal of 18814161 is 16141881.

It is an interprime number because it is at equal distance from previous prime (18814151) and next prime (18814171).

It is not a de Polignac number, because 18814161 - 2¹⁴ = 18797777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18814141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148080 + ... + 148206.

It is an arithmetic number, because the mean of its divisors is an integer number (875520).

Almost surely, 2^18814161 is an apocalyptic number.

It is an amenable number.

18814161 is a deficient number, since it is larger than the sum of its proper divisors (9202479).

18814161 is a wasteful number, since it uses less digits than its factorization.

18814161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285.

The product of its digits is 1536, while the sum is 30.

The square root of 18814161 is about 4337.5293658948. The cubic root of 18814161 is about 265.9673250233.

The spelling of 18814161 in words is "eighteen million, eight hundred fourteen thousand, one hundred sixty-one".