2864083821 has 4 divisors (see below), whose sum is σ = 3818778432. Its totient is φ = 1909389212.

The previous prime is 2864083799. The next prime is 2864083829. The reversal of 2864083821 is 1283804682.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2864083821 - 2¹⁸ = 2863821677 is a prime.

It is a super-2 number, since 2×2864083821² = 16405952267427920082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2864083829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477347301 + ... + 477347306.

It is an arithmetic number, because the mean of its divisors is an integer number (954694608).

Almost surely, 2^2864083821 is an apocalyptic number.

It is an amenable number.

2864083821 is a deficient number, since it is larger than the sum of its proper divisors (954694611).

2864083821 is an equidigital number, since it uses as much as digits as its factorization.

2864083821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954694610.

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 2864083821 is about 53517.1357697700. The cubic root of 2864083821 is about 1420.1315458707.

The spelling of 2864083821 in words is "two billion, eight hundred sixty-four million, eighty-three thousand, eight hundred twenty-one".