16045993 has 2 divisors, whose sum is σ = 16045994. Its totient is φ = 16045992.

The previous prime is 16045979. The next prime is 16046029. The reversal of 16045993 is 39954061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12902464 + 3143529 = 3592^2 + 1773^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16045993 is a prime.

It is not a weakly prime, because it can be changed into another prime (16045933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8022996 + 8022997.

It is an arithmetic number, because the mean of its divisors is an integer number (8022997).

Almost surely, 2^16045993 is an apocalyptic number.

It is an amenable number.

16045993 is a deficient number, since it is larger than the sum of its proper divisors (1).

16045993 is an equidigital number, since it uses as much as digits as its factorization.

16045993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 16045993 is about 4005.7449993728. The cubic root of 16045993 is about 252.2254271154.

The spelling of 16045993 in words is "sixteen million, forty-five thousand, nine hundred ninety-three".