1788852816 has 80 divisors (see below), whose sum is σ = 5218921920. Its totient is φ = 586500480.

The previous prime is 1788852781. The next prime is 1788852817. The reversal of 1788852816 is 6182588871.

It is a super-2 number, since 2×1788852816² = 6399988794622259712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1788852817) 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 15 ways as a sum of consecutive naturals, for example, 7590 + ... + 60293.

It is an arithmetic number, because the mean of its divisors is an integer number (65236524).

Almost surely, 2^1788852816 is an apocalyptic number.

1788852816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1788852816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2609460960).

1788852816 is an abundant number, since it is smaller than the sum of its proper divisors (3430069104).

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

1788852816 is a wasteful number, since it uses less digits than its factorization.

1788852816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67961 (or 67949 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 54.

The square root of 1788852816 is about 42294.8320247285. The cubic root of 1788852816 is about 1213.9241077743.

The spelling of 1788852816 in words is "one billion, seven hundred eighty-eight million, eight hundred fifty-two thousand, eight hundred sixteen".