16318733 has 2 divisors, whose sum is σ = 16318734. Its totient is φ = 16318732.

The previous prime is 16318703. The next prime is 16318787. The reversal of 16318733 is 33781361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12866569 + 3452164 = 3587^2 + 1858^2 .

It is a cyclic number.

It is not a de Polignac number, because 16318733 - 2¹⁶ = 16253197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16318733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16318703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8159366 + 8159367.

It is an arithmetic number, because the mean of its divisors is an integer number (8159367).

Almost surely, 2^16318733 is an apocalyptic number.

It is an amenable number.

16318733 is a deficient number, since it is larger than the sum of its proper divisors (1).

16318733 is an equidigital number, since it uses as much as digits as its factorization.

16318733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 16318733 is about 4039.6451576840. The cubic root of 16318733 is about 253.6464639445.

The spelling of 16318733 in words is "sixteen million, three hundred eighteen thousand, seven hundred thirty-three".