16993283 has 2 divisors, whose sum is σ = 16993284. Its totient is φ = 16993282.

The previous prime is 16993267. The next prime is 16993289. The reversal of 16993283 is 38239961.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16993283 - 2⁴ = 16993267 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16993283.

It is not a weakly prime, because it can be changed into another prime (16993289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8496641 + 8496642.

It is an arithmetic number, because the mean of its divisors is an integer number (8496642).

Almost surely, 2^16993283 is an apocalyptic number.

16993283 is a deficient number, since it is larger than the sum of its proper divisors (1).

16993283 is an equidigital number, since it uses as much as digits as its factorization.

16993283 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 41.

The square root of 16993283 is about 4122.2909892437. The cubic root of 16993283 is about 257.0942893135.

The spelling of 16993283 in words is "sixteen million, nine hundred ninety-three thousand, two hundred eighty-three".