1798433280 has 720 divisors, whose sum is σ = 7641073440. Its totient is φ = 404103168.

The previous prime is 1798433261. The next prime is 1798433297. The reversal of 1798433280 is 823348971.

It is a tau number, because it is divible by the number of its divisors (720).

It is a super-2 number, since 2×1798433280² = 6468724525223116800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 30481891 + ... + 30481949.

It is an arithmetic number, because the mean of its divisors is an integer number (10612602).

Almost surely, 2^1798433280 is an apocalyptic number.

1798433280 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 1798433280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3820536720).

1798433280 is an abundant number, since it is smaller than the sum of its proper divisors (5842640160).

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

1798433280 is an frugal number, since it uses more digits than its factorization.

1798433280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1798433280 is about 42407.9388794127. The cubic root of 1798433280 is about 1216.0873667606.

The spelling of 1798433280 in words is "one billion, seven hundred ninety-eight million, four hundred thirty-three thousand, two hundred eighty".