2631844493 has 4 divisors (see below), whose sum is σ = 2631968988. Its totient is φ = 2631720000.

The previous prime is 2631844469. The next prime is 2631844507. The reversal of 2631844493 is 3944481362.

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 can be written as a sum of positive squares in 2 ways, for example, as 841116004 + 1790728489 = 29002^2 + 42317^2 .

It is a cyclic number.

It is not a de Polignac number, because 2631844493 - 2²⁴ = 2615067277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631844433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21758 + ... + 75743.

It is an arithmetic number, because the mean of its divisors is an integer number (657992247).

Almost surely, 2^2631844493 is an apocalyptic number.

It is an amenable number.

2631844493 is a deficient number, since it is larger than the sum of its proper divisors (124495).

2631844493 is an equidigital number, since it uses as much as digits as its factorization.

2631844493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124494.

The product of its digits is 497664, while the sum is 44.

The square root of 2631844493 is about 51301.5057576286. The cubic root of 2631844493 is about 1380.6599960355.

The spelling of 2631844493 in words is "two billion, six hundred thirty-one million, eight hundred forty-four thousand, four hundred ninety-three".