18475801 has 2 divisors, whose sum is σ = 18475802. Its totient is φ = 18475800.

The previous prime is 18475781. The next prime is 18475817. The reversal of 18475801 is 10857481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11055625 + 7420176 = 3325^2 + 2724^2 .

It is a cyclic number.

It is not a de Polignac number, because 18475801 - 2¹¹ = 18473753 is a prime.

It is not a weakly prime, because it can be changed into another prime (18470801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9237900 + 9237901.

It is an arithmetic number, because the mean of its divisors is an integer number (9237901).

Almost surely, 2^18475801 is an apocalyptic number.

It is an amenable number.

18475801 is a deficient number, since it is larger than the sum of its proper divisors (1).

18475801 is an equidigital number, since it uses as much as digits as its factorization.

18475801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 18475801 is about 4298.3486363951. The cubic root of 18475801 is about 264.3632558724.

The spelling of 18475801 in words is "eighteen million, four hundred seventy-five thousand, eight hundred one".