2109038904 has 128 divisors (see below), whose sum is σ = 7089292800. Its totient is φ = 567129600.

The previous prime is 2109038879. The next prime is 2109038917. The reversal of 2109038904 is 4098309012.

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15322 + ... + 66729.

It is an arithmetic number, because the mean of its divisors is an integer number (55385100).

Almost surely, 2^2109038904 is an apocalyptic number.

2109038904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2109038904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3544646400).

2109038904 is an abundant number, since it is smaller than the sum of its proper divisors (4980253896).

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

2109038904 is a wasteful number, since it uses less digits than its factorization.

2109038904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82090 (or 82080 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2109038904 is about 45924.2735816257. The cubic root of 2109038904 is about 1282.4138418917.

The spelling of 2109038904 in words is "two billion, one hundred nine million, thirty-eight thousand, nine hundred four".