2085777798 has 32 divisors (see below), whose sum is σ = 4522221312. Its totient is φ = 637524000.

The previous prime is 2085777779. The next prime is 2085777803. The reversal of 2085777798 is 8977775802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76768 + ... + 100323.

It is an arithmetic number, because the mean of its divisors is an integer number (141319416).

Almost surely, 2^2085777798 is an apocalyptic number.

2085777798 is an abundant number, since it is smaller than the sum of its proper divisors (2436443514).

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

2085777798 is a wasteful number, since it uses less digits than its factorization.

2085777798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177260.

The product of its (nonzero) digits is 13829760, while the sum is 60.

The square root of 2085777798 is about 45670.3163772707. The cubic root of 2085777798 is about 1277.6817164337.

The spelling of 2085777798 in words is "two billion, eighty-five million, seven hundred seventy-seven thousand, seven hundred ninety-eight".