2181480384 has 56 divisors (see below), whose sum is σ = 5775258960. Its totient is φ = 726728704.

The previous prime is 2181480377. The next prime is 2181480391. The reversal of 2181480384 is 4830841812.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2181480377) and next prime (2181480391).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 637462 + ... + 640874.

Almost surely, 2^2181480384 is an apocalyptic number.

2181480384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2181480384 is an abundant number, since it is smaller than the sum of its proper divisors (3593778576).

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

2181480384 is a wasteful number, since it uses less digits than its factorization.

2181480384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6757 (or 6747 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The square root of 2181480384 is about 46706.3206001072. The cubic root of 2181480384 is about 1296.9316955358.

The spelling of 2181480384 in words is "two billion, one hundred eighty-one million, four hundred eighty thousand, three hundred eighty-four".