1989484224 has 336 divisors, whose sum is σ = 6871898880. Its totient is φ = 496005120.

The previous prime is 1989484219. The next prime is 1989484229. The reversal of 1989484224 is 4224849891.

It is an interprime number because it is at equal distance from previous prime (1989484219) and next prime (1989484229).

It is a tau number, because it is divible by the number of its divisors (336).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1989484229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4315354 + ... + 4315814.

It is an arithmetic number, because the mean of its divisors is an integer number (20452080).

Almost surely, 2^1989484224 is an apocalyptic number.

1989484224 is a gapful number since it is divisible by the number (14) 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 1989484224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3435949440).

1989484224 is an abundant number, since it is smaller than the sum of its proper divisors (4882414656).

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

1989484224 is a wasteful number, since it uses less digits than its factorization.

1989484224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 505 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 51.

The square root of 1989484224 is about 44603.6346501045. The cubic root of 1989484224 is about 1257.7089938490.

The spelling of 1989484224 in words is "one billion, nine hundred eighty-nine million, four hundred eighty-four thousand, two hundred twenty-four".