2109391010 has 32 divisors (see below), whose sum is σ = 3875497920. Its totient is φ = 826396992.

The previous prime is 2109390989. The next prime is 2109391013. The reversal of 2109391010 is 101939012.

It is not an unprimeable number, because it can be changed into a prime (2109391013) 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, 156977 + ... + 169883.

It is an arithmetic number, because the mean of its divisors is an integer number (121109310).

Almost surely, 2^2109391010 is an apocalyptic number.

2109391010 is a deficient number, since it is larger than the sum of its proper divisors (1766106910).

2109391010 is a wasteful number, since it uses less digits than its factorization.

2109391010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13250.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 2109391010 is about 45928.1069716573. The cubic root of 2109391010 is about 1282.4852046470.

The spelling of 2109391010 in words is "two billion, one hundred nine million, three hundred ninety-one thousand, ten".