16866093389 has 2 divisors, whose sum is σ = 16866093390. Its totient is φ = 16866093388.

The previous prime is 16866093353. The next prime is 16866093401. The reversal of 16866093389 is 98339066861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16813530889 + 52562500 = 129667^2 + 7250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16866093389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16866093589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8433046694 + 8433046695.

It is an arithmetic number, because the mean of its divisors is an integer number (8433046695).

Almost surely, 2^16866093389 is an apocalyptic number.

It is an amenable number.

16866093389 is a deficient number, since it is larger than the sum of its proper divisors (1).

16866093389 is an equidigital number, since it uses as much as digits as its factorization.

16866093389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10077696, while the sum is 59.

The spelling of 16866093389 in words is "sixteen billion, eight hundred sixty-six million, ninety-three thousand, three hundred eighty-nine".