18004963 has 2 divisors, whose sum is σ = 18004964. Its totient is φ = 18004962.

The previous prime is 18004957. The next prime is 18004991. The reversal of 18004963 is 36940081.

It is a weak prime.

It is an emirp because it is prime and its reverse (36940081) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18004963 is a prime.

It is not a weakly prime, because it can be changed into another prime (18004933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9002481 + 9002482.

It is an arithmetic number, because the mean of its divisors is an integer number (9002482).

Almost surely, 2^18004963 is an apocalyptic number.

18004963 is a deficient number, since it is larger than the sum of its proper divisors (1).

18004963 is an equidigital number, since it uses as much as digits as its factorization.

18004963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 18004963 is about 4243.2255419669. The cubic root of 18004963 is about 262.0982237622.

The spelling of 18004963 in words is "eighteen million, four thousand, nine hundred sixty-three".