18435941 has 2 divisors, whose sum is σ = 18435942. Its totient is φ = 18435940.

The previous prime is 18435929. The next prime is 18435943. The reversal of 18435941 is 14953481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10336225 + 8099716 = 3215^2 + 2846^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18435941 is a prime.

Together with 18435943, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18435943) 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, 9217970 + 9217971.

It is an arithmetic number, because the mean of its divisors is an integer number (9217971).

Almost surely, 2^18435941 is an apocalyptic number.

It is an amenable number.

18435941 is a deficient number, since it is larger than the sum of its proper divisors (1).

18435941 is an equidigital number, since it uses as much as digits as its factorization.

18435941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 18435941 is about 4293.7094685132. The cubic root of 18435941 is about 264.1730050967.

The spelling of 18435941 in words is "eighteen million, four hundred thirty-five thousand, nine hundred forty-one".