2166093 has 6 divisors (see below), whose sum is σ = 3128814. Its totient is φ = 1444056.

The previous prime is 2166077. The next prime is 2166113. The reversal of 2166093 is 3906612.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2064969 + 101124 = 1437^2 + 318^2 .

It is not a de Polignac number, because 2166093 - 2⁴ = 2166077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120330 + ... + 120347.

It is an arithmetic number, because the mean of its divisors is an integer number (521469).

2^2166093 is an apocalyptic number.

It is an amenable number.

2166093 is a deficient number, since it is larger than the sum of its proper divisors (962721).

2166093 is a wasteful number, since it uses less digits than its factorization.

2166093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240683 (or 240680 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 2166093 is about 1471.7652666101. The cubic root of 2166093 is about 129.3875133174.

It can be divided in two parts, 216609 and 3, that added together give a palindrome (216612).

The spelling of 2166093 in words is "two million, one hundred sixty-six thousand, ninety-three".