2488491391 has 4 divisors (see below), whose sum is σ = 2488594752. Its totient is φ = 2488388032.

The previous prime is 2488491377. The next prime is 2488491407. The reversal of 2488491391 is 1931948842.

2488491391 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2488491391 - 2¹¹ = 2488489343 is a prime.

It is a super-2 number, since 2×2488491391² = 12385178806162229762, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2488491301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5586 + ... + 70768.

It is an arithmetic number, because the mean of its divisors is an integer number (622148688).

Almost surely, 2^2488491391 is an apocalyptic number.

2488491391 is a deficient number, since it is larger than the sum of its proper divisors (103361).

2488491391 is an equidigital number, since it uses as much as digits as its factorization.

2488491391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103360.

The product of its digits is 497664, while the sum is 49.

The square root of 2488491391 is about 49884.7811561803. The cubic root of 2488491391 is about 1355.1229929705.

The spelling of 2488491391 in words is "two billion, four hundred eighty-eight million, four hundred ninety-one thousand, three hundred ninety-one".