2109209364 has 36 divisors (see below), whose sum is σ = 5333065920. Its totient is φ = 702878160.

The previous prime is 2109209351. The next prime is 2109209369. The reversal of 2109209364 is 4639029012.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109209369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200467 + ... + 210725.

It is an arithmetic number, because the mean of its divisors is an integer number (148140720).

Almost surely, 2^2109209364 is an apocalyptic number.

It is an amenable number.

2109209364 is an abundant number, since it is smaller than the sum of its proper divisors (3223856556).

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

2109209364 is a wasteful number, since it uses less digits than its factorization.

2109209364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15980 (or 15975 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 2109209364 is about 45926.1294254153. The cubic root of 2109209364 is about 1282.4483907050.

The spelling of 2109209364 in words is "two billion, one hundred nine million, two hundred nine thousand, three hundred sixty-four".