2051916799 has 4 divisors (see below), whose sum is σ = 2159912440. Its totient is φ = 1943921160.

The previous prime is 2051916781. The next prime is 2051916821. The reversal of 2051916799 is 9976191502.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2051916799 - 2⁵ = 2051916767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051916739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53997792 + ... + 53997829.

It is an arithmetic number, because the mean of its divisors is an integer number (539978110).

Almost surely, 2^2051916799 is an apocalyptic number.

2051916799 is a deficient number, since it is larger than the sum of its proper divisors (107995641).

2051916799 is a wasteful number, since it uses less digits than its factorization.

2051916799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107995640.

The product of its (nonzero) digits is 306180, while the sum is 49.

The square root of 2051916799 is about 45298.0882488434. The cubic root of 2051916799 is about 1270.7299003485.

The spelling of 2051916799 in words is "two billion, fifty-one million, nine hundred sixteen thousand, seven hundred ninety-nine".