16813530869 has 2 divisors, whose sum is σ = 16813530870. Its totient is φ = 16813530868.

The previous prime is 16813530857. The next prime is 16813530907. The reversal of 16813530869 is 96803531861.

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., 16369923025 + 443607844 = 127945^2 + 21062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16813530869 is a prime.

It is a super-2 number, since 2×16813530869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16813530809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8406765434 + 8406765435.

It is an arithmetic number, because the mean of its divisors is an integer number (8406765435).

Almost surely, 2^16813530869 is an apocalyptic number.

It is an amenable number.

16813530869 is a deficient number, since it is larger than the sum of its proper divisors (1).

16813530869 is an equidigital number, since it uses as much as digits as its factorization.

16813530869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 16813530869 in words is "sixteen billion, eight hundred thirteen million, five hundred thirty thousand, eight hundred sixty-nine".