2109187234 has 16 divisors (see below), whose sum is σ = 3944454336. Its totient is φ = 821761200.

The previous prime is 2109187187. The next prime is 2109187259. The reversal of 2109187234 is 4327819012.

It is a junction number, because it is equal to n+sod(n) for n = 2109187193 and 2109187202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6847857 + ... + 6848164.

It is an arithmetic number, because the mean of its divisors is an integer number (246528396).

Almost surely, 2^2109187234 is an apocalyptic number.

2109187234 is a deficient number, since it is larger than the sum of its proper divisors (1835267102).

2109187234 is a wasteful number, since it uses less digits than its factorization.

2109187234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13696041.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2109187234 is about 45925.8884943993. Note that the first 3 decimals coincide. The cubic root of 2109187234 is about 1282.4439055043.

The spelling of 2109187234 in words is "two billion, one hundred nine million, one hundred eighty-seven thousand, two hundred thirty-four".