2391166 has 8 divisors (see below), whose sum is σ = 3710520. Its totient is φ = 1154328.

The previous prime is 2391157. The next prime is 2391167. The reversal of 2391166 is 6611932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2391167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20556 + ... + 20671.

It is an arithmetic number, because the mean of its divisors is an integer number (463815).

2^2391166 is an apocalyptic number.

2391166 is a deficient number, since it is larger than the sum of its proper divisors (1319354).

2391166 is a wasteful number, since it uses less digits than its factorization.

2391166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41258.

The product of its digits is 1944, while the sum is 28.

The square root of 2391166 is about 1546.3395487408. The cubic root of 2391166 is about 133.7221166436.

The spelling of 2391166 in words is "two million, three hundred ninety-one thousand, one hundred sixty-six".