2819985872 has 40 divisors (see below), whose sum is σ = 5968829280. Its totient is φ = 1280004480.

The previous prime is 2819985859. The next prime is 2819985877. The reversal of 2819985872 is 2785899182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2819985877) 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, 118079 + ... + 139937.

It is an arithmetic number, because the mean of its divisors is an integer number (149220732).

Almost surely, 2^2819985872 is an apocalyptic number.

2819985872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2819985872 is an abundant number, since it is smaller than the sum of its proper divisors (3148843408).

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

2819985872 is a wasteful number, since it uses less digits than its factorization.

2819985872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22611 (or 22605 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 59.

The square root of 2819985872 is about 53103.5391664247. The cubic root of 2819985872 is about 1412.8052850148.

The spelling of 2819985872 in words is "two billion, eight hundred nineteen million, nine hundred eighty-five thousand, eight hundred seventy-two".