2164859 has 2 divisors, whose sum is σ = 2164860. Its totient is φ = 2164858.

The previous prime is 2164853. The next prime is 2164901. The reversal of 2164859 is 9584612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2164859 - 2⁴ = 2164843 is a prime.

It is a super-2 number, since 2×2164859² = 9373228979762, which contains 22 as substring.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 6² + 4⁸ + 8⁷ + 5 + 9² .

It is not a weakly prime, because it can be changed into another prime (2164853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082429 + 1082430.

It is an arithmetic number, because the mean of its divisors is an integer number (1082430).

2^2164859 is an apocalyptic number.

2164859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164859 is an equidigital number, since it uses as much as digits as its factorization.

2164859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 2164859 is about 1471.3459824256. The cubic root of 2164859 is about 129.3629384229.

The spelling of 2164859 in words is "two million, one hundred sixty-four thousand, eight hundred fifty-nine".