641816422 has 16 divisors (see below), whose sum is σ = 1044700272. Its totient is φ = 293960160.

The previous prime is 641816401. The next prime is 641816437. The reversal of 641816422 is 224618146.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90813 + ... + 97624.

It is an arithmetic number, because the mean of its divisors is an integer number (65293767).

Almost surely, 2^641816422 is an apocalyptic number.

641816422 is a deficient number, since it is larger than the sum of its proper divisors (402883850).

641816422 is a wasteful number, since it uses less digits than its factorization.

641816422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188583.

The product of its digits is 18432, while the sum is 34.

The square root of 641816422 is about 25334.0960367644. The cubic root of 641816422 is about 862.5883897932.

The spelling of 641816422 in words is "six hundred forty-one million, eight hundred sixteen thousand, four hundred twenty-two".