16819013 has 2 divisors, whose sum is σ = 16819014. Its totient is φ = 16819012.

The previous prime is 16818983. The next prime is 16819051. The reversal of 16819013 is 31091861.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16467364 + 351649 = 4058^2 + 593^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16819013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16819213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8409506 + 8409507.

It is an arithmetic number, because the mean of its divisors is an integer number (8409507).

Almost surely, 2^16819013 is an apocalyptic number.

It is an amenable number.

16819013 is a deficient number, since it is larger than the sum of its proper divisors (1).

16819013 is an equidigital number, since it uses as much as digits as its factorization.

16819013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 16819013 is about 4101.0989990489. The cubic root of 16819013 is about 256.2124142375.

The spelling of 16819013 in words is "sixteen million, eight hundred nineteen thousand, thirteen".