2985445891 has 8 divisors (see below), whose sum is σ = 3001577120. Its totient is φ = 2969353728.

The previous prime is 2985445847. The next prime is 2985445907. The reversal of 2985445891 is 1985445892.

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 2985445891 - 2⁷ = 2985445763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2985442891) 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, 150490 + ... + 169168.

It is an arithmetic number, because the mean of its divisors is an integer number (375197140).

Almost surely, 2^2985445891 is an apocalyptic number.

2985445891 is a deficient number, since it is larger than the sum of its proper divisors (16131229).

2985445891 is a wasteful number, since it uses less digits than its factorization.

2985445891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19533.

The product of its digits is 4147200, while the sum is 55.

The square root of 2985445891 is about 54639.2339898721. The cubic root of 2985445891 is about 1439.9134932279.

Subtracting from 2985445891 its reverse (1985445892), we obtain a palindrome (999999999).

The spelling of 2985445891 in words is "two billion, nine hundred eighty-five million, four hundred forty-five thousand, eight hundred ninety-one".