2000643915 has 16 divisors (see below), whose sum is σ = 3234032928. Its totient is φ = 1056009216.

The previous prime is 2000643899. The next prime is 2000643917. The reversal of 2000643915 is 5193460002.

It is not a de Polignac number, because 2000643915 - 2⁴ = 2000643899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2000643917) 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, 686052 + ... + 688961.

It is an arithmetic number, because the mean of its divisors is an integer number (202127058).

Almost surely, 2^2000643915 is an apocalyptic number.

2000643915 is a deficient number, since it is larger than the sum of its proper divisors (1233389013).

2000643915 is a wasteful number, since it uses less digits than its factorization.

2000643915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375118.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 2000643915 is about 44728.5581591895. The cubic root of 2000643915 is about 1260.0562490636.

The spelling of 2000643915 in words is "two billion, six hundred forty-three thousand, nine hundred fifteen".