18522953 has 2 divisors, whose sum is σ = 18522954. Its totient is φ = 18522952.

The previous prime is 18522941. The next prime is 18522961. The reversal of 18522953 is 35922581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16540489 + 1982464 = 4067^2 + 1408^2 .

It is a cyclic number.

It is not a de Polignac number, because 18522953 - 2¹⁴ = 18506569 is a prime.

It is not a weakly prime, because it can be changed into another prime (18522913) 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 as a sum of consecutive naturals, namely, 9261476 + 9261477.

It is an arithmetic number, because the mean of its divisors is an integer number (9261477).

Almost surely, 2^18522953 is an apocalyptic number.

It is an amenable number.

18522953 is a deficient number, since it is larger than the sum of its proper divisors (1).

18522953 is an equidigital number, since it uses as much as digits as its factorization.

18522953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 35.

The square root of 18522953 is about 4303.8300384657. The cubic root of 18522953 is about 264.5879582110.

The spelling of 18522953 in words is "eighteen million, five hundred twenty-two thousand, nine hundred fifty-three".