2821890419 has 2 divisors, whose sum is σ = 2821890420. Its totient is φ = 2821890418.

The previous prime is 2821890397. The next prime is 2821890457. The reversal of 2821890419 is 9140981282.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2821890419 is a prime.

It is a super-2 number, since 2×2821890419² = 15926131073687991122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2821890419.

It is not a weakly prime, because it can be changed into another prime (2821890499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410945209 + 1410945210.

It is an arithmetic number, because the mean of its divisors is an integer number (1410945210).

Almost surely, 2^2821890419 is an apocalyptic number.

2821890419 is a deficient number, since it is larger than the sum of its proper divisors (1).

2821890419 is an equidigital number, since it uses as much as digits as its factorization.

2821890419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 2821890419 is about 53121.4685320351. The cubic root of 2821890419 is about 1413.1232710687.

The spelling of 2821890419 in words is "two billion, eight hundred twenty-one million, eight hundred ninety thousand, four hundred nineteen".