2182991 has 2 divisors, whose sum is σ = 2182992. Its totient is φ = 2182990.

The previous prime is 2182949. The next prime is 2182993. The reversal of 2182991 is 1992812.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2182991 - 2¹⁴ = 2166607 is a prime.

Together with 2182993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2182993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1091495 + 1091496.

It is an arithmetic number, because the mean of its divisors is an integer number (1091496).

2^2182991 is an apocalyptic number.

2182991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2182991 is an equidigital number, since it uses as much as digits as its factorization.

2182991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 32.

The square root of 2182991 is about 1477.4948392465. The cubic root of 2182991 is about 129.7230989803.

The spelling of 2182991 in words is "two million, one hundred eighty-two thousand, nine hundred ninety-one".