1802280722 has 18 divisors (see below), whose sum is σ = 2972618229. Its totient is φ = 818918320.

The previous prime is 1802280707. The next prime is 1802280743. The reversal of 1802280722 is 2270822081.

It can be written as a sum of positive squares in 2 ways, for example, as 1238265721 + 564015001 = 35189^2 + 23749^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=30019.

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 659054 + ... + 661782.

Almost surely, 2^1802280722 is an apocalyptic number.

1802280722 is a deficient number, since it is larger than the sum of its proper divisors (1170337507).

1802280722 is an frugal number, since it uses more digits than its factorization.

1802280722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5482 (or 2742 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 1802280722 is about 42453.2769288779. The cubic root of 1802280722 is about 1216.9539530843.

Multiplying 1802280722 by its sum of digits (32), we get a square (57672983104 = 240152²).

The spelling of 1802280722 in words is "one billion, eight hundred two million, two hundred eighty thousand, seven hundred twenty-two".