2109392109 has 24 divisors (see below), whose sum is σ = 3339676704. Its totient is φ = 1272348000.

The previous prime is 2109392107. The next prime is 2109392143. The reversal of 2109392109 is 9012939012.

It is a happy number.

It is not a de Polignac number, because 2109392109 - 2¹ = 2109392107 is a prime.

It is a super-2 number, since 2×2109392109² = 8899070139022935762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109392107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29602 + ... + 71379.

It is an arithmetic number, because the mean of its divisors is an integer number (139153196).

Almost surely, 2^2109392109 is an apocalyptic number.

It is an amenable number.

2109392109 is a deficient number, since it is larger than the sum of its proper divisors (1230284595).

2109392109 is a wasteful number, since it uses less digits than its factorization.

2109392109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101209 (or 101206 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 2109392109 is about 45928.1189360069. The cubic root of 2109392109 is about 1282.4854273734.

The spelling of 2109392109 in words is "two billion, one hundred nine million, three hundred ninety-two thousand, one hundred nine".