2109143890 has 16 divisors (see below), whose sum is σ = 4338810432. Its totient is φ = 723135024.

The previous prime is 2109143867. The next prime is 2109143891. The reversal of 2109143890 is 983419012.

It is not an unprimeable number, because it can be changed into a prime (2109143891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15065244 + ... + 15065383.

It is an arithmetic number, because the mean of its divisors is an integer number (271175652).

Almost surely, 2^2109143890 is an apocalyptic number.

2109143890 is an abundant number, since it is smaller than the sum of its proper divisors (2229666542).

2109143890 is a wasteful number, since it uses less digits than its factorization.

2109143890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30130641.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 2109143890 is about 45925.4166012678. The cubic root of 2109143890 is about 1282.4351206624.

The spelling of 2109143890 in words is "two billion, one hundred nine million, one hundred forty-three thousand, eight hundred ninety".