1668366336 has 240 divisors, whose sum is σ = 5490176384. Its totient is φ = 438829056.

The previous prime is 1668366313. The next prime is 1668366347. The reversal of 1668366336 is 6336638661.

It is a Harshad number since it is a multiple of its sum of digits (48).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4472646 + ... + 4473018.

Almost surely, 2^1668366336 is an apocalyptic number.

1668366336 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 1668366336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2745088192).

1668366336 is an abundant number, since it is smaller than the sum of its proper divisors (3821810048).

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

1668366336 is an equidigital number, since it uses as much as digits as its factorization.

1668366336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 398 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 48.

The square root of 1668366336 is about 40845.6403548775. The cubic root of 1668366336 is about 1186.0340007334.

The spelling of 1668366336 in words is "one billion, six hundred sixty-eight million, three hundred sixty-six thousand, three hundred thirty-six".