641104130 has 16 divisors (see below), whose sum is σ = 1156660344. Its totient is φ = 255847680.

The previous prime is 641104117. The next prime is 641104133. The reversal of 641104130 is 31401146.

It can be written as a sum of positive squares in 4 ways, for example, as 274266721 + 366837409 = 16561^2 + 19153^2 .

It is a super-2 number, since 2×641104130² = 822029011006113800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (641104133) by changing a digit.

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, 69701 + ... + 78360.

Almost surely, 2^641104130 is an apocalyptic number.

641104130 is a deficient number, since it is larger than the sum of its proper divisors (515556214).

641104130 is a wasteful number, since it uses less digits than its factorization.

641104130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148501.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 641104130 is about 25320.0341626942. The cubic root of 641104130 is about 862.2691696225.

Adding to 641104130 its reverse (31401146), we get a palindrome (672505276).

The spelling of 641104130 in words is "six hundred forty-one million, one hundred four thousand, one hundred thirty".