2085308278 has 16 divisors (see below), whose sum is σ = 3239746560. Its totient is φ = 1006677000.

The previous prime is 2085308261. The next prime is 2085308287. The reversal of 2085308278 is 8728035802.

It is a super-2 number, since 2×2085308278² = 8697021228590650568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27403 + ... + 70153.

It is an arithmetic number, because the mean of its divisors is an integer number (202484160).

Almost surely, 2^2085308278 is an apocalyptic number.

2085308278 is a deficient number, since it is larger than the sum of its proper divisors (1154438282).

2085308278 is an frugal number, since it uses more digits than its factorization.

2085308278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42840 (or 42782 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 2085308278 is about 45665.1757688504. The cubic root of 2085308278 is about 1277.5858381896.

The spelling of 2085308278 in words is "two billion, eighty-five million, three hundred eight thousand, two hundred seventy-eight".