4481128913 has 8 divisors (see below), whose sum is σ = 4527383016. Its totient is φ = 4434912000.

The previous prime is 4481128903. The next prime is 4481128931. The reversal of 4481128913 is 3198211844.

It can be written as a sum of positive squares in 4 ways, for example, as 3075478849 + 1405650064 = 55457^2 + 37492^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4481128913 - 2²⁶ = 4414020049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4481128903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278303 + ... + 293963.

It is an arithmetic number, because the mean of its divisors is an integer number (565922877).

Almost surely, 2^4481128913 is an apocalyptic number.

It is an amenable number.

4481128913 is a deficient number, since it is larger than the sum of its proper divisors (46254103).

4481128913 is a wasteful number, since it uses less digits than its factorization.

4481128913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18595.

The product of its digits is 55296, while the sum is 41.

The square root of 4481128913 is about 66941.2347734937. The cubic root of 4481128913 is about 1648.6525777153.

The spelling of 4481128913 in words is "four billion, four hundred eighty-one million, one hundred twenty-eight thousand, nine hundred thirteen".