1788461668 has 48 divisors (see below), whose sum is σ = 3711456000. Its totient is φ = 737815680.

The previous prime is 1788461663. The next prime is 1788461681. The reversal of 1788461668 is 8661648871.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1788461663) 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, 280233 + ... + 286543.

It is an arithmetic number, because the mean of its divisors is an integer number (77322000).

Almost surely, 2^1788461668 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 1788461668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1855728000).

1788461668 is an abundant number, since it is smaller than the sum of its proper divisors (1922994332).

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

1788461668 is a wasteful number, since it uses less digits than its factorization.

1788461668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700 (or 6698 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 55.

The square root of 1788461668 is about 42290.2077081681. The cubic root of 1788461668 is about 1213.8356230212.

The spelling of 1788461668 in words is "one billion, seven hundred eighty-eight million, four hundred sixty-one thousand, six hundred sixty-eight".