1668823416 has 48 divisors (see below), whose sum is σ = 4867404360. Its totient is φ = 513483840.

The previous prime is 1668823379. The next prime is 1668823417. The reversal of 1668823416 is 6143288661.

1668823416 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668823417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 890530 + ... + 892401.

Almost surely, 2^1668823416 is an apocalyptic number.

It is an amenable number.

1668823416 is an abundant number, since it is smaller than the sum of its proper divisors (3198580944).

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

1668823416 is a wasteful number, since it uses less digits than its factorization.

1668823416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782956 (or 1782949 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 1668823416 is about 40851.2351832842. The cubic root of 1668823416 is about 1186.1423028710.

It can be divided in two parts, 16688 and 23416, that added together give a palindrome (40104).

The spelling of 1668823416 in words is "one billion, six hundred sixty-eight million, eight hundred twenty-three thousand, four hundred sixteen".