2861085078 has 40 divisors (see below), whose sum is σ = 6414480072. Its totient is φ = 953169984.

The previous prime is 2861085041. The next prime is 2861085089. The reversal of 2861085078 is 8705801682.

2861085078 is a `hidden beast` number, since 28 + 610 + 8 + 5 + 0 + 7 + 8 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 387901 + ... + 395207.

Almost surely, 2^2861085078 is an apocalyptic number.

2861085078 is an abundant number, since it is smaller than the sum of its proper divisors (3553394994).

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

2861085078 is a wasteful number, since it uses less digits than its factorization.

2861085078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9738 (or 9729 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The square root of 2861085078 is about 53489.1117705277. Note that the first 3 decimals coincide. The cubic root of 2861085078 is about 1419.6357390739.

The spelling of 2861085078 in words is "two billion, eight hundred sixty-one million, eighty-five thousand, seventy-eight".