2051696859 has 16 divisors (see below), whose sum is σ = 2763929088. Its totient is φ = 1353657312.

The previous prime is 2051696849. The next prime is 2051696887. The reversal of 2051696859 is 9586961502.

It is not a de Polignac number, because 2051696859 - 2²⁴ = 2034919643 is a prime.

It is a super-3 number, since 3×2051696859³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2051696819) 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 15 ways as a sum of consecutive naturals, for example, 394494 + ... + 399660.

It is an arithmetic number, because the mean of its divisors is an integer number (172745568).

Almost surely, 2^2051696859 is an apocalyptic number.

2051696859 is a deficient number, since it is larger than the sum of its proper divisors (712232229).

2051696859 is a wasteful number, since it uses less digits than its factorization.

2051696859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6514.

The product of its (nonzero) digits is 1166400, while the sum is 51.

The square root of 2051696859 is about 45295.6604875125. The cubic root of 2051696859 is about 1270.6844965711.

The spelling of 2051696859 in words is "two billion, fifty-one million, six hundred ninety-six thousand, eight hundred fifty-nine".