1798545280 has 128 divisors (see below), whose sum is σ = 4929439680. Its totient is φ = 614694912.

The previous prime is 1798545271. The next prime is 1798545313. The reversal of 1798545280 is 825458971.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2656302 + ... + 2656978.

Almost surely, 2^1798545280 is an apocalyptic number.

1798545280 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 1798545280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2464719840).

1798545280 is an abundant number, since it is smaller than the sum of its proper divisors (3130894400).

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

1798545280 is an equidigital number, since it uses as much as digits as its factorization.

1798545280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 49.

The square root of 1798545280 is about 42409.2593663224. The cubic root of 1798545280 is about 1216.1126107622.

The spelling of 1798545280 in words is "one billion, seven hundred ninety-eight million, five hundred forty-five thousand, two hundred eighty".