1788428608 has 56 divisors (see below), whose sum is σ = 3740764680. Its totient is φ = 847042560.

The previous prime is 1788428581. The next prime is 1788428647. The reversal of 1788428608 is 8068248871.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 921243904 + 867184704 = 30352^2 + 29448^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89278 + ... + 107458.

Almost surely, 2^1788428608 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 1788428608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1870382340).

1788428608 is an abundant number, since it is smaller than the sum of its proper divisors (1952336072).

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

1788428608 is a wasteful number, since it uses less digits than its factorization.

1788428608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18275 (or 18265 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 52.

The square root of 1788428608 is about 42289.8168357348. The cubic root of 1788428608 is about 1213.8281436599.

The spelling of 1788428608 in words is "one billion, seven hundred eighty-eight million, four hundred twenty-eight thousand, six hundred eight".