4445131885 has 8 divisors (see below), whose sum is σ = 5334557976. Its totient is φ = 3555839040.

The previous prime is 4445131877. The next prime is 4445131903. The reversal of 4445131885 is 5881315444.

4445131885 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 573554601 + 3871577284 = 23949^2 + 62222^2 .

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

It is not a de Polignac number, because 4445131885 - 2³ = 4445131877 is a prime.

It is a Duffinian number.

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, 68227 + ... + 116383.

It is an arithmetic number, because the mean of its divisors is an integer number (666819747).

Almost surely, 2^4445131885 is an apocalyptic number.

It is an amenable number.

4445131885 is a deficient number, since it is larger than the sum of its proper divisors (889426091).

4445131885 is a wasteful number, since it uses less digits than its factorization.

4445131885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66623.

The product of its digits is 307200, while the sum is 43.

The square root of 4445131885 is about 66671.8222714814. The cubic root of 4445131885 is about 1644.2261472268.

The spelling of 4445131885 in words is "four billion, four hundred forty-five million, one hundred thirty-one thousand, eight hundred eighty-five".