18905053 has 2 divisors, whose sum is σ = 18905054. Its totient is φ = 18905052.

The previous prime is 18905027. The next prime is 18905087. The reversal of 18905053 is 35050981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15657849 + 3247204 = 3957^2 + 1802^2 .

It is a cyclic number.

It is not a de Polignac number, because 18905053 - 2⁵ = 18905021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18905353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9452526 + 9452527.

It is an arithmetic number, because the mean of its divisors is an integer number (9452527).

Almost surely, 2^18905053 is an apocalyptic number.

It is an amenable number.

18905053 is a deficient number, since it is larger than the sum of its proper divisors (1).

18905053 is an equidigital number, since it uses as much as digits as its factorization.

18905053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 18905053 is about 4347.9941352306. The cubic root of 18905053 is about 266.3949369204.

The spelling of 18905053 in words is "eighteen million, nine hundred five thousand, fifty-three".