16481903 has 2 divisors, whose sum is σ = 16481904. Its totient is φ = 16481902.

The previous prime is 16481897. The next prime is 16481939. The reversal of 16481903 is 30918461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16481903 - 2¹⁸ = 16219759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16481903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16481203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8240951 + 8240952.

It is an arithmetic number, because the mean of its divisors is an integer number (8240952).

Almost surely, 2^16481903 is an apocalyptic number.

16481903 is a deficient number, since it is larger than the sum of its proper divisors (1).

16481903 is an equidigital number, since it uses as much as digits as its factorization.

16481903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 16481903 is about 4059.7910044730. The cubic root of 16481903 is about 254.4890602225.

The spelling of 16481903 in words is "sixteen million, four hundred eighty-one thousand, nine hundred three".