2491193 has 4 divisors (see below), whose sum is σ = 2495988. Its totient is φ = 2486400.

The previous prime is 2491189. The next prime is 2491207. The reversal of 2491193 is 3911942.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 727609 + 1763584 = 853^2 + 1328^2 .

It is a cyclic number.

It is not a de Polignac number, because 2491193 - 2² = 2491189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2491123) 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, 1508 + ... + 2693.

It is an arithmetic number, because the mean of its divisors is an integer number (623997).

2^2491193 is an apocalyptic number.

It is an amenable number.

2491193 is a deficient number, since it is larger than the sum of its proper divisors (4795).

2491193 is an equidigital number, since it uses as much as digits as its factorization.

2491193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4794.

The product of its digits is 1944, while the sum is 29.

The square root of 2491193 is about 1578.3513550537. The cubic root of 2491193 is about 135.5613208105.

The spelling of 2491193 in words is "two million, four hundred ninety-one thousand, one hundred ninety-three".