2821819252 has 36 divisors (see below), whose sum is σ = 5838613284. Its totient is φ = 1189520640.

The previous prime is 2821819241. The next prime is 2821819279. The reversal of 2821819252 is 2529181282.

It can be written as a sum of positive squares in 2 ways, for example, as 78783376 + 2743035876 = 8876^2 + 52374^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106053 + ... + 129964.

Almost surely, 2^2821819252 is an apocalyptic number.

It is an amenable number.

2821819252 is an abundant number, since it is smaller than the sum of its proper divisors (3016794032).

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

2821819252 is a wasteful number, since it uses less digits than its factorization.

2821819252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236096 (or 236087 counting only the distinct ones).

The product of its digits is 46080, while the sum is 40.

The square root of 2821819252 is about 53120.7986762247. The cubic root of 2821819252 is about 1413.1113914922. Note that the first 3 decimals are identical.

The spelling of 2821819252 in words is "two billion, eight hundred twenty-one million, eight hundred nineteen thousand, two hundred fifty-two".