16282993 has 2 divisors, whose sum is σ = 16282994. Its totient is φ = 16282992.

The previous prime is 16282979. The next prime is 16282999. The reversal of 16282993 is 39928261.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12027024 + 4255969 = 3468^2 + 2063^2 .

It is an emirp because it is prime and its reverse (39928261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16282993 - 2²¹ = 14185841 is a prime.

It is a super-2 number, since 2×16282993² = 530271722076098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16282999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8141496 + 8141497.

It is an arithmetic number, because the mean of its divisors is an integer number (8141497).

Almost surely, 2^16282993 is an apocalyptic number.

It is an amenable number.

16282993 is a deficient number, since it is larger than the sum of its proper divisors (1).

16282993 is an equidigital number, since it uses as much as digits as its factorization.

16282993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 16282993 is about 4035.2190770762. The cubic root of 16282993 is about 253.4611564467.

The spelling of 16282993 in words is "sixteen million, two hundred eighty-two thousand, nine hundred ninety-three".