2164389 has 24 divisors (see below), whose sum is σ = 3241728. Its totient is φ = 1278720.

The previous prime is 2164387. The next prime is 2164399. The reversal of 2164389 is 9834612.

It is not a de Polignac number, because 2164389 - 2¹ = 2164387 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 6³ + 4⁸ + 3⁵ + 8³ + 9³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58479 + ... + 58515.

It is an arithmetic number, because the mean of its divisors is an integer number (135072).

2^2164389 is an apocalyptic number.

It is an amenable number.

2164389 is a deficient number, since it is larger than the sum of its proper divisors (1077339).

2164389 is a wasteful number, since it uses less digits than its factorization.

2164389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 88 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 2164389 is about 1471.1862560533. The cubic root of 2164389 is about 129.3535759992.

The spelling of 2164389 in words is "two million, one hundred sixty-four thousand, three hundred eighty-nine".