641111195 has 4 divisors (see below), whose sum is σ = 769333440. Its totient is φ = 512888952.

The previous prime is 641111189. The next prime is 641111201. The reversal of 641111195 is 591111146.

641111195 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (641111189) and next prime (641111201).

It is a cyclic number.

It is not a de Polignac number, because 641111195 - 2⁴ = 641111179 is a prime.

It is a super-2 number, since 2×641111195² = 822047128708656050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64111115 + ... + 64111124.

It is an arithmetic number, because the mean of its divisors is an integer number (192333360).

Almost surely, 2^641111195 is an apocalyptic number.

641111195 is a deficient number, since it is larger than the sum of its proper divisors (128222245).

641111195 is a wasteful number, since it uses less digits than its factorization.

641111195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128222244.

The product of its digits is 1080, while the sum is 29.

The square root of 641111195 is about 25320.1736763396. The cubic root of 641111195 is about 862.2723370275.

The spelling of 641111195 in words is "six hundred forty-one million, one hundred eleven thousand, one hundred ninety-five".