2051335865 has 8 divisors (see below), whose sum is σ = 2467162368. Its totient is φ = 1637362480.

The previous prime is 2051335861. The next prime is 2051335901. The reversal of 2051335865 is 5685331502.

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

It is not a de Polignac number, because 2051335865 - 2² = 2051335861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2051335861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460841 + ... + 465270.

It is an arithmetic number, because the mean of its divisors is an integer number (308395296).

Almost surely, 2^2051335865 is an apocalyptic number.

It is an amenable number.

2051335865 is a deficient number, since it is larger than the sum of its proper divisors (415826503).

2051335865 is an equidigital number, since it uses as much as digits as its factorization.

2051335865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926559.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 2051335865 is about 45291.6754492478. The cubic root of 2051335865 is about 1270.6099669799.

The spelling of 2051335865 in words is "two billion, fifty-one million, three hundred thirty-five thousand, eight hundred sixty-five".