2181553089 has 8 divisors (see below), whose sum is σ = 2910745152. Its totient is φ = 1453364880.

The previous prime is 2181553037. The next prime is 2181553123. The reversal of 2181553089 is 9803551812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2181553089 - 2²³ = 2173164481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2181553089.

It is not an unprimeable number, because it can be changed into a prime (2181553589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245877 + ... + 254594.

It is an arithmetic number, because the mean of its divisors is an integer number (363843144).

Almost surely, 2^2181553089 is an apocalyptic number.

It is an amenable number.

2181553089 is a deficient number, since it is larger than the sum of its proper divisors (729192063).

2181553089 is a wasteful number, since it uses less digits than its factorization.

2181553089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501927.

The product of its (nonzero) digits is 86400, while the sum is 42.

The square root of 2181553089 is about 46707.0989144049. The cubic root of 2181553089 is about 1296.9461035455.

The spelling of 2181553089 in words is "two billion, one hundred eighty-one million, five hundred fifty-three thousand, eighty-nine".