4382891661 has 16 divisors (see below), whose sum is σ = 6105939840. Its totient is φ = 2791219200.

The previous prime is 4382891629. The next prime is 4382891683. The reversal of 4382891661 is 1661982834.

4382891661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4382891661 - 2⁵ = 4382891629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4382891661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4382890661) 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 15 ways as a sum of consecutive naturals, for example, 11761 + ... + 94361.

It is an arithmetic number, because the mean of its divisors is an integer number (381621240).

Almost surely, 2^4382891661 is an apocalyptic number.

It is an amenable number.

4382891661 is a deficient number, since it is larger than the sum of its proper divisors (1723048179).

4382891661 is a wasteful number, since it uses less digits than its factorization.

4382891661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83396.

The product of its digits is 497664, while the sum is 48.

The square root of 4382891661 is about 66203.4112489681. The cubic root of 4382891661 is about 1636.5159604546.

The spelling of 4382891661 in words is "four billion, three hundred eighty-two million, eight hundred ninety-one thousand, six hundred sixty-one".