2085172908 has 96 divisors (see below), whose sum is σ = 6001927680. Its totient is φ = 548674560.

The previous prime is 2085172889. The next prime is 2085172909. The reversal of 2085172908 is 8092715802.

2085172908 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 2085172908.

It is not an unprimeable number, because it can be changed into a prime (2085172909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 534228 + ... + 538116.

It is an arithmetic number, because the mean of its divisors is an integer number (62520080).

Almost surely, 2^2085172908 is an apocalyptic number.

2085172908 is a gapful number since it is divisible by the number (28) 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 2085172908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3000963840).

2085172908 is an abundant number, since it is smaller than the sum of its proper divisors (3916754772).

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

2085172908 is a wasteful number, since it uses less digits than its factorization.

2085172908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4407 (or 4405 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 2085172908 is about 45663.6935431202. The cubic root of 2085172908 is about 1277.5581923112.

The spelling of 2085172908 in words is "two billion, eighty-five million, one hundred seventy-two thousand, nine hundred eight".