2789819890 has 192 divisors, whose sum is σ = 6314360832. Its totient is φ = 878342400.

The previous prime is 2789819887. The next prime is 2789819909. The reversal of 2789819890 is 989189872.

It is a super-2 number, since 2×2789819890² = 15566190037279224200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27085579 + ... + 27085681.

It is an arithmetic number, because the mean of its divisors is an integer number (32887296).

Almost surely, 2^2789819890 is an apocalyptic number.

2789819890 is an abundant number, since it is smaller than the sum of its proper divisors (3524540942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2789819890 is a wasteful number, since it uses less digits than its factorization.

2789819890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 61.

The square root of 2789819890 is about 52818.7456306944. The cubic root of 2789819890 is about 1407.7495226490.

The spelling of 2789819890 in words is "two billion, seven hundred eighty-nine million, eight hundred nineteen thousand, eight hundred ninety".