2109125910 has 32 divisors (see below), whose sum is σ = 5359662432. Its totient is φ = 529349120.

The previous prime is 2109125881. The next prime is 2109125917. The reversal of 2109125910 is 195219012.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109125917) 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 15 ways as a sum of consecutive naturals, for example, 2067261 + ... + 2068280.

It is an arithmetic number, because the mean of its divisors is an integer number (167489451).

Almost surely, 2^2109125910 is an apocalyptic number.

2109125910 is an abundant number, since it is smaller than the sum of its proper divisors (3250536522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2109125910 is a wasteful number, since it uses less digits than its factorization.

2109125910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4135568.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 2109125910 is about 45925.2208486797. The cubic root of 2109125910 is about 1282.4314764904.

The spelling of 2109125910 in words is "two billion, one hundred nine million, one hundred twenty-five thousand, nine hundred ten".