641190834 has 48 divisors (see below), whose sum is σ = 1501918080. Its totient is φ = 197004960.

The previous prime is 641190817. The next prime is 641190839. The reversal of 641190834 is 438091146.

641190834 is a `hidden beast` number, since 641 + 1 + 9 + 0 + 8 + 3 + 4 = 666.

It is a super-2 number, since 2×641190834² = 822251371211231112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641190839) 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 23 ways as a sum of consecutive naturals, for example, 12682 + ... + 37989.

It is an arithmetic number, because the mean of its divisors is an integer number (31289960).

Almost surely, 2^641190834 is an apocalyptic number.

641190834 is an abundant number, since it is smaller than the sum of its proper divisors (860727246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

641190834 is a wasteful number, since it uses less digits than its factorization.

641190834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50735 (or 50732 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 641190834 is about 25321.7462667961. The cubic root of 641190834 is about 862.3080394475.

The spelling of 641190834 in words is "six hundred forty-one million, one hundred ninety thousand, eight hundred thirty-four".