2185086384 has 120 divisors (see below), whose sum is σ = 6599108880. Its totient is φ = 670957056.

The previous prime is 2185086331. The next prime is 2185086427. The reversal of 2185086384 is 4836805812.

2185086384 is a `hidden beast` number, since 2 + 1 + 8 + 5 + 0 + 8 + 638 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1277722 + ... + 1279430.

It is an arithmetic number, because the mean of its divisors is an integer number (54992574).

Almost surely, 2^2185086384 is an apocalyptic number.

2185086384 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 2185086384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3299554440).

2185086384 is an abundant number, since it is smaller than the sum of its proper divisors (4414022496).

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

2185086384 is a wasteful number, since it uses less digits than its factorization.

2185086384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419 (or 2410 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 2185086384 is about 46744.9075729111. The cubic root of 2185086384 is about 1297.6459140701.

The spelling of 2185086384 in words is "two billion, one hundred eighty-five million, eighty-six thousand, three hundred eighty-four".