2164387 has 2 divisors, whose sum is σ = 2164388. Its totient is φ = 2164386.

The previous prime is 2164367. The next prime is 2164399. The reversal of 2164387 is 7834612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2164387 - 2¹¹ = 2162339 is a prime.

It is a d-powerful number, because it can be written as 2⁵ + 1 + 6⁴ + 4⁸ + 3³ + 8⁷ + 7³ .

It is not a weakly prime, because it can be changed into another prime (2164307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1082193 + 1082194.

It is an arithmetic number, because the mean of its divisors is an integer number (1082194).

2^2164387 is an apocalyptic number.

2164387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164387 is an equidigital number, since it uses as much as digits as its factorization.

2164387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 2164387 is about 1471.1855763295. The cubic root of 2164387 is about 129.3535361562.

Adding to 2164387 its reverse (7834612), we get a palindrome (9998999).

The spelling of 2164387 in words is "two million, one hundred sixty-four thousand, three hundred eighty-seven".