18545041 has 2 divisors, whose sum is σ = 18545042. Its totient is φ = 18545040.

The previous prime is 18544979. The next prime is 18545053. The reversal of 18545041 is 14054581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9634816 + 8910225 = 3104^2 + 2985^2 .

It is an emirp because it is prime and its reverse (14054581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18545041 - 2⁹ = 18544529 is a prime.

It is not a weakly prime, because it can be changed into another prime (18545741) 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, 9272520 + 9272521.

It is an arithmetic number, because the mean of its divisors is an integer number (9272521).

Almost surely, 2^18545041 is an apocalyptic number.

It is an amenable number.

18545041 is a deficient number, since it is larger than the sum of its proper divisors (1).

18545041 is an equidigital number, since it uses as much as digits as its factorization.

18545041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 18545041 is about 4306.3953603913. The cubic root of 18545041 is about 264.6930871888.

The spelling of 18545041 in words is "eighteen million, five hundred forty-five thousand, forty-one".