2164319 has 4 divisors (see below), whose sum is σ = 2214696. Its totient is φ = 2113944.

The previous prime is 2164313. The next prime is 2164367. The reversal of 2164319 is 9134612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2164319 - 2¹⁶ = 2098783 is a prime.

It is a super-2 number, since 2×2164319² = 9368553467522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25124 + ... + 25209.

It is an arithmetic number, because the mean of its divisors is an integer number (553674).

2^2164319 is an apocalyptic number.

2164319 is a deficient number, since it is larger than the sum of its proper divisors (50377).

2164319 is an equidigital number, since it uses as much as digits as its factorization.

2164319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50376.

The product of its digits is 1296, while the sum is 26.

The square root of 2164319 is about 1471.1624655353. The cubic root of 2164319 is about 129.3521814798.

The spelling of 2164319 in words is "two million, one hundred sixty-four thousand, three hundred nineteen".