1802016220 has 24 divisors (see below), whose sum is σ = 3786099408. Its totient is φ = 720451200.

The previous prime is 1802016191. The next prime is 1802016241. The reversal of 1802016220 is 226102081.

It is a junction number, because it is equal to n+sod(n) for n = 1802016191 and 1802016200.

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 7 ways as a sum of consecutive naturals, for example, 21480 + ... + 63760.

It is an arithmetic number, because the mean of its divisors is an integer number (157754142).

Almost surely, 2^1802016220 is an apocalyptic number.

1802016220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1802016220 is an abundant number, since it is smaller than the sum of its proper divisors (1984083188).

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

1802016220 is a wasteful number, since it uses less digits than its factorization.

1802016220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44421 (or 44419 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1802016220 is about 42450.1616015770. The cubic root of 1802016220 is about 1216.8944169461.

It can be divided in two parts, 180 and 2016220, that added together give a square (2016400 = 1420²).

The spelling of 1802016220 in words is "one billion, eight hundred two million, sixteen thousand, two hundred twenty".