641830130 has 16 divisors (see below), whose sum is σ = 1162655640. Its totient is φ = 255096192.

The previous prime is 641830129. The next prime is 641830141. The reversal of 641830130 is 31038146.

It can be written as a sum of positive squares in 4 ways, for example, as 241149841 + 400680289 = 15529^2 + 20017^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 641830130.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202835 + ... + 205974.

Almost surely, 2^641830130 is an apocalyptic number.

641830130 is a deficient number, since it is larger than the sum of its proper divisors (520825510).

641830130 is a wasteful number, since it uses less digits than its factorization.

641830130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408973.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 641830130 is about 25334.3665798062. The cubic root of 641830130 is about 862.5945308418.

Adding to 641830130 its reverse (31038146), we get a palindrome (672868276).

The spelling of 641830130 in words is "six hundred forty-one million, eight hundred thirty thousand, one hundred thirty".