2085455780 has 12 divisors (see below), whose sum is σ = 4379457180. Its totient is φ = 834182304.

The previous prime is 2085455767. The next prime is 2085455791. The reversal of 2085455780 is 875545802.

It can be written as a sum of positive squares in 2 ways, for example, as 711715684 + 1373740096 = 26678^2 + 37064^2 .

It is a super-3 number, since 3×2085455780³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52136375 + ... + 52136414.

It is an arithmetic number, because the mean of its divisors is an integer number (364954765).

Almost surely, 2^2085455780 is an apocalyptic number.

2085455780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2085455780 is an abundant number, since it is smaller than the sum of its proper divisors (2294001400).

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

2085455780 is a wasteful number, since it uses less digits than its factorization.

2085455780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104272798 (or 104272796 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 44.

The square root of 2085455780 is about 45666.7907784202. The cubic root of 2085455780 is about 1277.6159603583.

The spelling of 2085455780 in words is "two billion, eighty-five million, four hundred fifty-five thousand, seven hundred eighty".