2491973 has 8 divisors (see below), whose sum is σ = 2746656. Its totient is φ = 2242000.

The previous prime is 2491967. The next prime is 2492003. The reversal of 2491973 is 3791942.

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

It is a cyclic number.

It is not a de Polignac number, because 2491973 - 2²⁰ = 1443397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11 + ... + 2232.

It is an arithmetic number, because the mean of its divisors is an integer number (343332).

2^2491973 is an apocalyptic number.

It is an amenable number.

2491973 is a deficient number, since it is larger than the sum of its proper divisors (254683).

2491973 is a wasteful number, since it uses less digits than its factorization.

2491973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355.

The product of its digits is 13608, while the sum is 35.

The square root of 2491973 is about 1578.5984289869. The cubic root of 2491973 is about 135.5754675528.

It can be divided in two parts, 249 and 1973, that added together give a palindrome (2222).

The spelling of 2491973 in words is "two million, four hundred ninety-one thousand, nine hundred seventy-three".