16346389 has 2 divisors, whose sum is σ = 16346390. Its totient is φ = 16346388.

The previous prime is 16346383. The next prime is 16346417. The reversal of 16346389 is 98364361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15665764 + 680625 = 3958^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 16346389 - 2⁵ = 16346357 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 (16346383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8173194 + 8173195.

It is an arithmetic number, because the mean of its divisors is an integer number (8173195).

Almost surely, 2^16346389 is an apocalyptic number.

It is an amenable number.

16346389 is a deficient number, since it is larger than the sum of its proper divisors (1).

16346389 is an equidigital number, since it uses as much as digits as its factorization.

16346389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 40.

The square root of 16346389 is about 4043.0667815410. The cubic root of 16346389 is about 253.7896712951.

The spelling of 16346389 in words is "sixteen million, three hundred forty-six thousand, three hundred eighty-nine".