2161384830 has 128 divisors (see below), whose sum is σ = 6319296000. Its totient is φ = 521337600.

The previous prime is 2161384829. The next prime is 2161384861. The reversal of 2161384830 is 384831612.

2161384830 is a `hidden beast` number, since 2 + 1 + 613 + 8 + 4 + 8 + 30 = 666.

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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 624946 + ... + 628394.

It is an arithmetic number, because the mean of its divisors is an integer number (49369500).

Almost surely, 2^2161384830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2161384830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3159648000).

2161384830 is an abundant number, since it is smaller than the sum of its proper divisors (4157911170).

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

2161384830 is a wasteful number, since it uses less digits than its factorization.

2161384830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3687 (or 3681 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 2161384830 is about 46490.6961660072. The cubic root of 2161384830 is about 1292.9370073908.

The spelling of 2161384830 in words is "two billion, one hundred sixty-one million, three hundred eighty-four thousand, eight hundred thirty".