18059903 has 2 divisors, whose sum is σ = 18059904. Its totient is φ = 18059902.

The previous prime is 18059897. The next prime is 18059929. The reversal of 18059903 is 30995081.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18059903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18059963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9029951 + 9029952.

It is an arithmetic number, because the mean of its divisors is an integer number (9029952).

Almost surely, 2^18059903 is an apocalyptic number.

18059903 is a deficient number, since it is larger than the sum of its proper divisors (1).

18059903 is an equidigital number, since it uses as much as digits as its factorization.

18059903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 18059903 is about 4249.6944596053. The cubic root of 18059903 is about 262.3645402382.

The spelling of 18059903 in words is "eighteen million, fifty-nine thousand, nine hundred three".