18009763 has 2 divisors, whose sum is σ = 18009764. Its totient is φ = 18009762.

The previous prime is 18009683. The next prime is 18009821. The reversal of 18009763 is 36790081.

It is a strong prime.

It is an emirp because it is prime and its reverse (36790081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18009763 - 2¹⁷ = 17878691 is a prime.

It is not a weakly prime, because it can be changed into another prime (18009163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9004881 + 9004882.

It is an arithmetic number, because the mean of its divisors is an integer number (9004882).

Almost surely, 2^18009763 is an apocalyptic number.

18009763 is a deficient number, since it is larger than the sum of its proper divisors (1).

18009763 is an equidigital number, since it uses as much as digits as its factorization.

18009763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 18009763 is about 4243.7911117302. The cubic root of 18009763 is about 262.1215128907.

The spelling of 18009763 in words is "eighteen million, nine thousand, seven hundred sixty-three".