2051945959 has 8 divisors (see below), whose sum is σ = 2345359520. Its totient is φ = 1758602016.

The previous prime is 2051945947. The next prime is 2051946007. The reversal of 2051945959 is 9595491502.

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 2051945959 - 2²¹ = 2049848807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051946959) 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 7 ways as a sum of consecutive naturals, for example, 89797 + ... + 110305.

It is an arithmetic number, because the mean of its divisors is an integer number (293169940).

Almost surely, 2^2051945959 is an apocalyptic number.

2051945959 is a deficient number, since it is larger than the sum of its proper divisors (293413561).

2051945959 is a wasteful number, since it uses less digits than its factorization.

2051945959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34809.

The product of its (nonzero) digits is 729000, while the sum is 49.

The square root of 2051945959 is about 45298.4101155879. The cubic root of 2051945959 is about 1270.7359198110.

The spelling of 2051945959 in words is "two billion, fifty-one million, nine hundred forty-five thousand, nine hundred fifty-nine".