2189448798 has 16 divisors (see below), whose sum is σ = 4569284736. Its totient is φ = 698085080.

The previous prime is 2189448791. The next prime is 2189448809. The reversal of 2189448798 is 8978449812.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189448791) 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, 7932648 + ... + 7932923.

It is an arithmetic number, because the mean of its divisors is an integer number (285580296).

Almost surely, 2^2189448798 is an apocalyptic number.

2189448798 is an abundant number, since it is smaller than the sum of its proper divisors (2379835938).

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

2189448798 is a wasteful number, since it uses less digits than its factorization.

2189448798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15865599.

The product of its digits is 9289728, while the sum is 60.

The square root of 2189448798 is about 46791.5462236503. The cubic root of 2189448798 is about 1298.5089014108.

The spelling of 2189448798 in words is "two billion, one hundred eighty-nine million, four hundred forty-eight thousand, seven hundred ninety-eight".