1789161280 has 224 divisors, whose sum is σ = 4645444608. Its totient is φ = 654950400.

The previous prime is 1789161271. The next prime is 1789161287. The reversal of 1789161280 is 821619871.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1789161287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21556119 + ... + 21556201.

It is an arithmetic number, because the mean of its divisors is an integer number (20738592).

Almost surely, 2^1789161280 is an apocalyptic number.

1789161280 is a gapful number since it is divisible by the number (10) 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 1789161280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2322722304).

1789161280 is an abundant number, since it is smaller than the sum of its proper divisors (2856283328).

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

1789161280 is a wasteful number, since it uses less digits than its factorization.

1789161280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 43.

The square root of 1789161280 is about 42298.4784596326. The cubic root of 1789161280 is about 1213.9938788144.

The spelling of 1789161280 in words is "one billion, seven hundred eighty-nine million, one hundred sixty-one thousand, two hundred eighty".