1801280448 has 84 divisors (see below), whose sum is σ = 5632432728. Its totient is φ = 545840640.

The previous prime is 1801280431. The next prime is 1801280491. The reversal of 1801280448 is 8440821081.

It is a happy number.

It is a super-3 number, since 3×1801280448³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135811 + ... + 148482.

Almost surely, 2^1801280448 is an apocalyptic number.

1801280448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1801280448 is an abundant number, since it is smaller than the sum of its proper divisors (3831152280).

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

1801280448 is a wasteful number, since it uses less digits than its factorization.

1801280448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284322 (or 284309 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 1801280448 is about 42441.4944128974. The cubic root of 1801280448 is about 1216.7287730937.

The spelling of 1801280448 in words is "one billion, eight hundred one million, two hundred eighty thousand, four hundred forty-eight".