16383973 has 2 divisors, whose sum is σ = 16383974. Its totient is φ = 16383972.

The previous prime is 16383949. The next prime is 16383977. The reversal of 16383973 is 37938361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9998244 + 6385729 = 3162^2 + 2527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16383973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16383977) 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, 8191986 + 8191987.

It is an arithmetic number, because the mean of its divisors is an integer number (8191987).

Almost surely, 2^16383973 is an apocalyptic number.

It is an amenable number.

16383973 is a deficient number, since it is larger than the sum of its proper divisors (1).

16383973 is an equidigital number, since it uses as much as digits as its factorization.

16383973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 40.

The square root of 16383973 is about 4047.7120697994. The cubic root of 16383973 is about 253.9840287972.

It can be divided in two parts, 1638397 and 3, that added together give a square (1638400 = 1280²).

The spelling of 16383973 in words is "sixteen million, three hundred eighty-three thousand, nine hundred seventy-three".