2191486 has 32 divisors (see below), whose sum is σ = 3856896. Its totient is φ = 924000.

The previous prime is 2191477. The next prime is 2191489. The reversal of 2191486 is 6841912.

It is a happy number.

2191486 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2191486² = 9605221776392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30831 + ... + 30901.

It is an arithmetic number, because the mean of its divisors is an integer number (120528).

2^2191486 is an apocalyptic number.

2191486 is a deficient number, since it is larger than the sum of its proper divisors (1665410).

2191486 is a wasteful number, since it uses less digits than its factorization.

2191486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168.

The product of its digits is 3456, while the sum is 31.

The square root of 2191486 is about 1480.3668464269. The cubic root of 2191486 is about 129.8911514905.

The spelling of 2191486 in words is "two million, one hundred ninety-one thousand, four hundred eighty-six".