2045955899 has 16 divisors (see below), whose sum is σ = 2335169088. Its totient is φ = 1775788032.

The previous prime is 2045955871. The next prime is 2045955907. The reversal of 2045955899 is 9985595402.

It is a cyclic number.

It is not a de Polignac number, because 2045955899 - 2²⁰ = 2044907323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2045955599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265154 + ... + 272760.

It is an arithmetic number, because the mean of its divisors is an integer number (145948068).

Almost surely, 2^2045955899 is an apocalyptic number.

2045955899 is a deficient number, since it is larger than the sum of its proper divisors (289213189).

2045955899 is a wasteful number, since it uses less digits than its factorization.

2045955899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8854.

The product of its (nonzero) digits is 5832000, while the sum is 56.

The square root of 2045955899 is about 45232.2440190623. The cubic root of 2045955899 is about 1269.4981998792.

The spelling of 2045955899 in words is "two billion, forty-five million, nine hundred fifty-five thousand, eight hundred ninety-nine".