2004819851 has 4 divisors (see below), whose sum is σ = 2073951600. Its totient is φ = 1935688104.

The previous prime is 2004819787. The next prime is 2004819853. The reversal of 2004819851 is 1589184002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2004819851 - 2⁶ = 2004819787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2004819853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34565831 + ... + 34565888.

It is an arithmetic number, because the mean of its divisors is an integer number (518487900).

Almost surely, 2^2004819851 is an apocalyptic number.

2004819851 is a deficient number, since it is larger than the sum of its proper divisors (69131749).

2004819851 is an equidigital number, since it uses as much as digits as its factorization.

2004819851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69131748.

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 2004819851 is about 44775.2146951860. The cubic root of 2004819851 is about 1260.9323432376.

The spelling of 2004819851 in words is "two billion, four million, eight hundred nineteen thousand, eight hundred fifty-one".