2805978850 has 24 divisors (see below), whose sum is σ = 5227860708. Its totient is φ = 1120512000.

The previous prime is 2805978821. The next prime is 2805978853. The reversal of 2805978850 is 588795082.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2277484729 + 528494121 = 47723^2 + 22989^2 .

It is not an unprimeable number, because it can be changed into a prime (2805978853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16639 + ... + 76738.

Almost surely, 2^2805978850 is an apocalyptic number.

2805978850 is a deficient number, since it is larger than the sum of its proper divisors (2421881858).

2805978850 is a wasteful number, since it uses less digits than its factorization.

2805978850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93990 (or 93985 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 52.

The square root of 2805978850 is about 52971.4909172849. The cubic root of 2805978850 is about 1410.4622413510.

The spelling of 2805978850 in words is "two billion, eight hundred five million, nine hundred seventy-eight thousand, eight hundred fifty".