2191152384 has 252 divisors, whose sum is σ = 6702276000. Its totient is φ = 714396672.

The previous prime is 2191152347. The next prime is 2191152407. The reversal of 2191152384 is 4832511912.

2191152384 is a `hidden beast` number, since 219 + 11 + 52 + 384 = 666.

It is a super-2 number, since 2×2191152384² = 9602297539817766912, which contains 22 as substring.

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 polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 11010717 + ... + 11010915.

Almost surely, 2^2191152384 is an apocalyptic number.

2191152384 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 2191152384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3351138000).

2191152384 is an abundant number, since it is smaller than the sum of its proper divisors (4511123616).

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

2191152384 is an frugal number, since it uses more digits than its factorization.

2191152384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292 (or 263 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 2191152384 is about 46809.7466773748. The cubic root of 2191152384 is about 1298.8455992580.

The spelling of 2191152384 in words is "two billion, one hundred ninety-one million, one hundred fifty-two thousand, three hundred eighty-four".