2894187820 has 24 divisors (see below), whose sum is σ = 6287374800. Its totient is φ = 1117755072.

The previous prime is 2894187817. The next prime is 2894187851. The reversal of 2894187820 is 287814982.

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, 2494410 + ... + 2495569.

It is an arithmetic number, because the mean of its divisors is an integer number (261973950).

Almost surely, 2^2894187820 is an apocalyptic number.

2894187820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2894187820 is an abundant number, since it is smaller than the sum of its proper divisors (3393186980).

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

2894187820 is a wasteful number, since it uses less digits than its factorization.

2894187820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990017 (or 4990015 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 49.

The square root of 2894187820 is about 53797.6562686517. The cubic root of 2894187820 is about 1425.0898180793.

The spelling of 2894187820 in words is "two billion, eight hundred ninety-four million, one hundred eighty-seven thousand, eight hundred twenty".