641791283 has 4 divisors (see below), whose sum is σ = 733475760. Its totient is φ = 550106808.

The previous prime is 641791207. The next prime is 641791303. The reversal of 641791283 is 382197146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 382197146 = 2 ⋅191098573.

It is a cyclic number.

It is not a de Polignac number, because 641791283 - 2¹⁴ = 641774899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 641791283.

It is not an unprimeable number, because it can be changed into a prime (641791783) 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, 45842228 + ... + 45842241.

It is an arithmetic number, because the mean of its divisors is an integer number (183368940).

Almost surely, 2^641791283 is an apocalyptic number.

641791283 is a deficient number, since it is larger than the sum of its proper divisors (91684477).

641791283 is an equidigital number, since it uses as much as digits as its factorization.

641791283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91684476.

The product of its digits is 72576, while the sum is 41.

The square root of 641791283 is about 25333.5998823697. The cubic root of 641791283 is about 862.5771275423.

The spelling of 641791283 in words is "six hundred forty-one million, seven hundred ninety-one thousand, two hundred eighty-three".