2881864489 has 9 divisors (see below), whose sum is σ = 3352810167. Its totient is φ = 2469847464.

The previous prime is 2881864481. The next prime is 2881864493. The reversal of 2881864489 is 9844681882.

The square root of 2881864489 is 53683.

It is a perfect power (a square), and thus also a powerful number.

2881864489 is digitally balanced in base 2, 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 only one way, i.e., 2733512089 + 148352400 = 52283^2 + 12180^2 .

It is not a de Polignac number, because 2881864489 - 2³ = 2881864481 is a prime.

It is a super-2 number, since 2×2881864489² = 16610285865918462242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2881864481) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 371947 + ... + 379615.

It is an arithmetic number, because the mean of its divisors is an integer number (372534463).

Almost surely, 2^2881864489 is an apocalyptic number.

2881864489 is the 53683-rd square number.

2881864489 is the 26842-nd centered octagonal number.

It is an amenable number.

2881864489 is a deficient number, since it is larger than the sum of its proper divisors (470945678).

2881864489 is an frugal number, since it uses more digits than its factorization.

2881864489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15352 (or 7676 counting only the distinct ones).

The product of its digits is 7077888, while the sum is 58.

The cubic root of 2881864489 is about 1423.0642828068.

The spelling of 2881864489 in words is "two billion, eight hundred eighty-one million, eight hundred sixty-four thousand, four hundred eighty-nine".