18275633 has 2 divisors, whose sum is σ = 18275634. Its totient is φ = 18275632.

The previous prime is 18275573. The next prime is 18275641. The reversal of 18275633 is 33657281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14386849 + 3888784 = 3793^2 + 1972^2 .

It is a cyclic number.

It is not a de Polignac number, because 18275633 - 2²⁰ = 17227057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18275593 and 18275602.

It is not a weakly prime, because it can be changed into another prime (18275233) 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, 9137816 + 9137817.

It is an arithmetic number, because the mean of its divisors is an integer number (9137817).

Almost surely, 2^18275633 is an apocalyptic number.

It is an amenable number.

18275633 is a deficient number, since it is larger than the sum of its proper divisors (1).

18275633 is an equidigital number, since it uses as much as digits as its factorization.

18275633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 18275633 is about 4275.0009356724. Note that the first 3 decimals coincide. The cubic root of 18275633 is about 263.4050777473.

The spelling of 18275633 in words is "eighteen million, two hundred seventy-five thousand, six hundred thirty-three".