1808733228 has 24 divisors (see below), whose sum is σ = 4221288960. Its totient is φ = 602780880.

The previous prime is 1808733169. The next prime is 1808733287. The reversal of 1808733228 is 8223378081.

It is an interprime number because it is at equal distance from previous prime (1808733169) and next prime (1808733287).

It is a self number, because there is not a number n which added to its sum of digits gives 1808733228.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53613 + ... + 80571.

It is an arithmetic number, because the mean of its divisors is an integer number (175887040).

Almost surely, 2^1808733228 is an apocalyptic number.

It is an amenable number.

1808733228 is an abundant number, since it is smaller than the sum of its proper divisors (2412555732).

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

1808733228 is a wasteful number, since it uses less digits than its factorization.

1808733228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32557 (or 32555 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 1808733228 is about 42529.2044129678. The cubic root of 1808733228 is about 1218.4045318155.

It can be divided in two parts, 18087 and 33228, that added together give a palindrome (51315).

The spelling of 1808733228 in words is "one billion, eight hundred eight million, seven hundred thirty-three thousand, two hundred twenty-eight".