4491133380 has 36 divisors (see below), whose sum is σ = 13623105132. Its totient is φ = 1197635520.

The previous prime is 4491133369. The next prime is 4491133421. The reversal of 4491133380 is 833311944.

4491133380 is a `hidden beast` number, since 4 + 491 + 133 + 38 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1035809856 + 3455323524 = 32184^2 + 58782^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 12475191 + ... + 12475550.

It is an arithmetic number, because the mean of its divisors is an integer number (378419587).

Almost surely, 2^4491133380 is an apocalyptic number.

It is an amenable number.

4491133380 is an abundant number, since it is smaller than the sum of its proper divisors (9131971752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4491133380 is a wasteful number, since it uses less digits than its factorization.

4491133380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24950756 (or 24950751 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 4491133380 is about 67015.9188551496. The cubic root of 4491133380 is about 1649.8785805969.

The spelling of 4491133380 in words is "four billion, four hundred ninety-one million, one hundred thirty-three thousand, three hundred eighty".