2151544992 has 24 divisors (see below), whose sum is σ = 5647805856. Its totient is φ = 717181632.

The previous prime is 2151544981. The next prime is 2151545029. The reversal of 2151544992 is 2994451512.

It is a tau number, because it is divible by the number of its divisors (24).

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 3 ways as a sum of consecutive naturals, for example, 11205868 + ... + 11206059.

It is an arithmetic number, because the mean of its divisors is an integer number (235325244).

Almost surely, 2^2151544992 is an apocalyptic number.

It is an amenable number.

2151544992 is an abundant number, since it is smaller than the sum of its proper divisors (3496260864).

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

2151544992 is a wasteful number, since it uses less digits than its factorization.

2151544992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22411940 (or 22411932 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The square root of 2151544992 is about 46384.7495627604. The cubic root of 2151544992 is about 1290.9719638323.

The spelling of 2151544992 in words is "two billion, one hundred fifty-one million, five hundred forty-four thousand, nine hundred ninety-two".