4491881944 has 32 divisors (see below), whose sum is σ = 9224591040. Its totient is φ = 2033620000.

The previous prime is 4491881909. The next prime is 4491881957.

It is a happy number.

4491881944 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 4491881891 and 4491881900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79594 + ... + 123769.

It is an arithmetic number, because the mean of its divisors is an integer number (288268470).

Almost surely, 2^4491881944 is an apocalyptic number.

4491881944 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4491881944 is an abundant number, since it is smaller than the sum of its proper divisors (4732709096).

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

4491881944 is a wasteful number, since it uses less digits than its factorization.

4491881944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203631 (or 203627 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 52.

The square root of 4491881944 is about 67021.5035939959. The cubic root of 4491881944 is about 1649.9702405407.

The spelling of 4491881944 in words is "four billion, four hundred ninety-one million, eight hundred eighty-one thousand, nine hundred forty-four".