1808049228 has 48 divisors (see below), whose sum is σ = 4445016576. Its totient is φ = 570873600.

The previous prime is 1808049223. The next prime is 1808049233. The reversal of 1808049228 is 8229408081.

It is an interprime number because it is at equal distance from previous prime (1808049223) and next prime (1808049233).

It is a self number, because there is not a number n which added to its sum of digits gives 1808049228.

It is not an unprimeable number, because it can be changed into a prime (1808049223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3373 + ... + 60228.

It is an arithmetic number, because the mean of its divisors is an integer number (92604512).

Almost surely, 2^1808049228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1808049228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2222508288).

1808049228 is an abundant number, since it is smaller than the sum of its proper divisors (2636967348).

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

1808049228 is a wasteful number, since it uses less digits than its factorization.

1808049228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63734 (or 63732 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 1808049228 is about 42521.1621195846. The cubic root of 1808049228 is about 1218.2509263784.

It can be divided in two parts, 180 and 8049228, that added together give a palindrome (8049408).

The spelling of 1808049228 in words is "one billion, eight hundred eight million, forty-nine thousand, two hundred twenty-eight".