2085918651 has 12 divisors (see below), whose sum is σ = 3034671640. Its totient is φ = 1380607200.

The previous prime is 2085918643. The next prime is 2085918673. The reversal of 2085918651 is 1568195802.

It is a happy number.

2085918651 is a `hidden beast` number, since 2 + 0 + 8 + 591 + 8 + 6 + 51 = 666.

It is not a de Polignac number, because 2085918651 - 2³ = 2085918643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2085918597 and 2085918606.

It is not an unprimeable number, because it can be changed into a prime (2085918631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 832450 + ... + 834951.

Almost surely, 2^2085918651 is an apocalyptic number.

2085918651 is a deficient number, since it is larger than the sum of its proper divisors (948752989).

2085918651 is a wasteful number, since it uses less digits than its factorization.

2085918651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667546 (or 1667543 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The square root of 2085918651 is about 45671.8584141263. The cubic root of 2085918651 is about 1277.7104764886.

The spelling of 2085918651 in words is "two billion, eighty-five million, nine hundred eighteen thousand, six hundred fifty-one".