1802228873 has 4 divisors (see below), whose sum is σ = 1803358980. Its totient is φ = 1801098768.

The previous prime is 1802228851. The next prime is 1802228881. The reversal of 1802228873 is 3788222081.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 715669504 + 1086559369 = 26752^2 + 32963^2 .

It is a cyclic number.

It is not a de Polignac number, because 1802228873 - 2²² = 1798034569 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1802228873.

It is not an unprimeable number, because it can be changed into a prime (1802228833) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 562658 + ... + 565851.

It is an arithmetic number, because the mean of its divisors is an integer number (450839745).

Almost surely, 2^1802228873 is an apocalyptic number.

It is an amenable number.

1802228873 is a deficient number, since it is larger than the sum of its proper divisors (1130107).

1802228873 is a wasteful number, since it uses less digits than its factorization.

1802228873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130106.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 1802228873 is about 42452.6662649120. Note that the first 3 decimals coincide. The cubic root of 1802228873 is about 1216.9422829728.

The spelling of 1802228873 in words is "one billion, eight hundred two million, two hundred twenty-eight thousand, eight hundred seventy-three".