2051867005 has 8 divisors (see below), whose sum is σ = 2528787672. Its totient is φ = 1597128768.

The previous prime is 2051866997. The next prime is 2051867023. The reversal of 2051867005 is 5007681502.

It can be written as a sum of positive squares in 4 ways, for example, as 1061065476 + 990801529 = 32574^2 + 31477^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2051867005 - 2³ = 2051866997 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 7 ways as a sum of consecutive naturals, for example, 5545402 + ... + 5545771.

It is an arithmetic number, because the mean of its divisors is an integer number (316098459).

Almost surely, 2^2051867005 is an apocalyptic number.

It is an amenable number.

2051867005 is a deficient number, since it is larger than the sum of its proper divisors (476920667).

2051867005 is a wasteful number, since it uses less digits than its factorization.

2051867005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11091215.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 2051867005 is about 45297.5386196645. The cubic root of 2051867005 is about 1270.7196213033.

The spelling of 2051867005 in words is "two billion, fifty-one million, eight hundred sixty-seven thousand, five".