1330646646 has 96 divisors (see below), whose sum is σ = 3400738560. Its totient is φ = 344481984.

The previous prime is 1330646641. The next prime is 1330646687. The reversal of 1330646646 is 6466460331.

It is a super-2 number, since 2×1330646646² = 3541240993022098632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330646641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123300 + ... + 133656.

It is an arithmetic number, because the mean of its divisors is an integer number (35424360).

Almost surely, 2^1330646646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1330646646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1700369280).

1330646646 is an abundant number, since it is smaller than the sum of its proper divisors (2070091914).

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

1330646646 is a wasteful number, since it uses less digits than its factorization.

1330646646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10418 (or 10411 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 39.

The square root of 1330646646 is about 36478.0296342881. The cubic root of 1330646646 is about 1099.9026486848.

The spelling of 1330646646 in words is "one billion, three hundred thirty million, six hundred forty-six thousand, six hundred forty-six".