184166401 has 4 divisors (see below), whose sum is σ = 184221252. Its totient is φ = 184111552.

The previous prime is 184166387. The next prime is 184166407. The reversal of 184166401 is 104661481.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33466225 + 150700176 = 5785^2 + 12276^2 .

It is a cyclic number.

It is not a de Polignac number, because 184166401 - 2¹¹ = 184164353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (184166407) 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 3 ways as a sum of consecutive naturals, for example, 22036 + ... + 29221.

It is an arithmetic number, because the mean of its divisors is an integer number (46055313).

Almost surely, 2^184166401 is an apocalyptic number.

It is an amenable number.

184166401 is a deficient number, since it is larger than the sum of its proper divisors (54851).

184166401 is an equidigital number, since it uses as much as digits as its factorization.

184166401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54850.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 184166401 is about 13570.7922023734. The cubic root of 184166401 is about 568.9448016687.

The spelling of 184166401 in words is "one hundred eighty-four million, one hundred sixty-six thousand, four hundred one".