641501103 has 12 divisors (see below), whose sum is σ = 908609480. Its totient is φ = 402509952.

The previous prime is 641501101. The next prime is 641501143. The reversal of 641501103 is 301105146.

It is not a de Polignac number, because 641501103 - 2¹ = 641501101 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 641501103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641501101) 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 11 ways as a sum of consecutive naturals, for example, 369088 + ... + 370821.

Almost surely, 2^641501103 is an apocalyptic number.

641501103 is a deficient number, since it is larger than the sum of its proper divisors (267108377).

641501103 is a wasteful number, since it uses less digits than its factorization.

641501103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739946 (or 739929 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 641501103 is about 25327.8720582681. The cubic root of 641501103 is about 862.4471058510.

Adding to 641501103 its reverse (301105146), we get a palindrome (942606249).

The spelling of 641501103 in words is "six hundred forty-one million, five hundred one thousand, one hundred three".