2821867646 has 16 divisors (see below), whose sum is σ = 4600226400. Its totient is φ = 1290450528.

The previous prime is 2821867613. The next prime is 2821867651. The reversal of 2821867646 is 6467681282.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2821867594 and 2821867603.

It is a congruent number.

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, 495026 + ... + 500693.

It is an arithmetic number, because the mean of its divisors is an integer number (287514150).

Almost surely, 2^2821867646 is an apocalyptic number.

2821867646 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2821867646 is a deficient number, since it is larger than the sum of its proper divisors (1778358754).

2821867646 is a wasteful number, since it uses less digits than its factorization.

2821867646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995843.

The product of its digits is 1548288, while the sum is 50.

The square root of 2821867646 is about 53121.2541832363. The cubic root of 2821867646 is about 1413.1194696994.

The spelling of 2821867646 in words is "two billion, eight hundred twenty-one million, eight hundred sixty-seven thousand, six hundred forty-six".