2191494 has 8 divisors (see below), whose sum is σ = 4383000. Its totient is φ = 730496.

The previous prime is 2191493. The next prime is 2191507. The reversal of 2191494 is 4941912.

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

2191494 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191493) 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, 182619 + ... + 182630.

It is an arithmetic number, because the mean of its divisors is an integer number (547875).

2^2191494 is an apocalyptic number.

2191494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2191494 is a wasteful number, since it uses less digits than its factorization.

2191494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365254.

The product of its digits is 2592, while the sum is 30.

The square root of 2191494 is about 1480.3695484574. The cubic root of 2191494 is about 129.8913095458.

The spelling of 2191494 in words is "two million, one hundred ninety-one thousand, four hundred ninety-four".