2816998821 has 48 divisors (see below), whose sum is σ = 5302612224. Its totient is φ = 1398477312.

The previous prime is 2816998741. The next prime is 2816998831. The reversal of 2816998821 is 1288996182.

It is not a de Polignac number, because 2816998821 - 2⁷ = 2816998693 is a prime.

It is a super-3 number, since 3×2816998821³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2816998831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87241 + ... + 115086.

It is an arithmetic number, because the mean of its divisors is an integer number (110471088).

Almost surely, 2^2816998821 is an apocalyptic number.

2816998821 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2816998821 is a deficient number, since it is larger than the sum of its proper divisors (2485613403).

2816998821 is a wasteful number, since it uses less digits than its factorization.

2816998821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202370 (or 202367 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The square root of 2816998821 is about 53075.4069320246. The cubic root of 2816998821 is about 1412.3062739614.

The spelling of 2816998821 in words is "two billion, eight hundred sixteen million, nine hundred ninety-eight thousand, eight hundred twenty-one".