5821641493 has 4 divisors (see below), whose sum is σ = 5822074188. Its totient is φ = 5821208800.

The previous prime is 5821641491. The next prime is 5821641499. The reversal of 5821641493 is 3941461285.

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 1768791249 + 4052850244 = 42057^2 + 63662^2 .

It is a cyclic number.

It is not a de Polignac number, because 5821641493 - 2¹ = 5821641491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5821641491) 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, 195496 + ... + 223297.

It is an arithmetic number, because the mean of its divisors is an integer number (1455518547).

Almost surely, 2^5821641493 is an apocalyptic number.

It is an amenable number.

5821641493 is a deficient number, since it is larger than the sum of its proper divisors (432695).

5821641493 is a wasteful number, since it uses less digits than its factorization.

5821641493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432694.

The product of its digits is 207360, while the sum is 43.

The square root of 5821641493 is about 76299.6821290888. The cubic root of 5821641493 is about 1798.9336784143.

The spelling of 5821641493 in words is "five billion, eight hundred twenty-one million, six hundred forty-one thousand, four hundred ninety-three".