2181130512 has 120 divisors (see below), whose sum is σ = 6244267008. Its totient is φ = 655522560.

The previous prime is 2181130499. The next prime is 2181130537. The reversal of 2181130512 is 2150311812.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 736138 + ... + 739094.

Almost surely, 2^2181130512 is an apocalyptic number.

2181130512 is a gapful number since it is divisible by the number (22) 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 2181130512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3122133504).

2181130512 is an abundant number, since it is smaller than the sum of its proper divisors (4063136496).

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

2181130512 is a wasteful number, since it uses less digits than its factorization.

2181130512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3117 (or 3100 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 2181130512 is about 46702.5750039545. The cubic root of 2181130512 is about 1296.8623566364.

The spelling of 2181130512 in words is "two billion, one hundred eighty-one million, one hundred thirty thousand, five hundred twelve".