4161225691 has 12 divisors (see below), whose sum is σ = 4837685872. Its totient is φ = 3506290704.

The previous prime is 4161225671. The next prime is 4161225703. The reversal of 4161225691 is 1965221614.

It is not a de Polignac number, because 4161225691 - 2⁵ = 4161225659 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 4161225691.

It is not an unprimeable number, because it can be changed into a prime (4161225671) 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, 61020 + ... + 109753.

Almost surely, 2^4161225691 is an apocalyptic number.

4161225691 is a deficient number, since it is larger than the sum of its proper divisors (676460181).

4161225691 is an equidigital number, since it uses as much as digits as its factorization.

4161225691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170898 (or 170839 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 4161225691 is about 64507.5630527150. The cubic root of 4161225691 is about 1608.4482420077.

The spelling of 4161225691 in words is "four billion, one hundred sixty-one million, two hundred twenty-five thousand, six hundred ninety-one".