16111859 has 2 divisors, whose sum is σ = 16111860. Its totient is φ = 16111858.

The previous prime is 16111853. The next prime is 16111873. The reversal of 16111859 is 95811161.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16111859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16111853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8055929 + 8055930.

It is an arithmetic number, because the mean of its divisors is an integer number (8055930).

Almost surely, 2^16111859 is an apocalyptic number.

16111859 is a deficient number, since it is larger than the sum of its proper divisors (1).

16111859 is an equidigital number, since it uses as much as digits as its factorization.

16111859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 32.

The square root of 16111859 is about 4013.9580217038. The cubic root of 16111859 is about 252.5700697605.

The spelling of 16111859 in words is "sixteen million, one hundred eleven thousand, eight hundred fifty-nine".