1289382204 has 96 divisors (see below), whose sum is σ = 3485776896. Its totient is φ = 366612480.

The previous prime is 1289382191. The next prime is 1289382229. The reversal of 1289382204 is 4022839821.

1289382204 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 970989 + ... + 972315.

It is an arithmetic number, because the mean of its divisors is an integer number (36310176).

Almost surely, 2^1289382204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1289382204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1742888448).

1289382204 is an abundant number, since it is smaller than the sum of its proper divisors (2196394692).

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

1289382204 is a wasteful number, since it uses less digits than its factorization.

1289382204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795 (or 1793 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 1289382204 is about 35907.9685306758. The cubic root of 1289382204 is about 1088.4134266759.

The spelling of 1289382204 in words is "one billion, two hundred eighty-nine million, three hundred eighty-two thousand, two hundred four".