18416803 has 2 divisors, whose sum is σ = 18416804. Its totient is φ = 18416802.

The previous prime is 18416777. The next prime is 18416819. The reversal of 18416803 is 30861481.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18416803 is a prime.

It is not a weakly prime, because it can be changed into another prime (18416843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9208401 + 9208402.

It is an arithmetic number, because the mean of its divisors is an integer number (9208402).

Almost surely, 2^18416803 is an apocalyptic number.

18416803 is a deficient number, since it is larger than the sum of its proper divisors (1).

18416803 is an equidigital number, since it uses as much as digits as its factorization.

18416803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 18416803 is about 4291.4802807423. The cubic root of 18416803 is about 264.0815624557.

The spelling of 18416803 in words is "eighteen million, four hundred sixteen thousand, eight hundred three".