2861190085 has 16 divisors (see below), whose sum is σ = 3735665136. Its totient is φ = 2091091968.

The previous prime is 2861190023. The next prime is 2861190091. The reversal of 2861190085 is 5800911682.

It can be written as a sum of positive squares in 8 ways, for example, as 98426241 + 2762763844 = 9921^2 + 52562^2 .

It is a cyclic number.

It is not a de Polignac number, because 2861190085 - 2¹¹ = 2861188037 is a prime.

It is a Duffinian number.

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, 220594 + ... + 233203.

It is an arithmetic number, because the mean of its divisors is an integer number (233479071).

Almost surely, 2^2861190085 is an apocalyptic number.

It is an amenable number.

2861190085 is a deficient number, since it is larger than the sum of its proper divisors (874475051).

2861190085 is a wasteful number, since it uses less digits than its factorization.

2861190085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453912.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 2861190085 is about 53490.0933351214. The cubic root of 2861190085 is about 1419.6531065950.

The spelling of 2861190085 in words is "two billion, eight hundred sixty-one million, one hundred ninety thousand, eighty-five".