1330939988 has 96 divisors (see below), whose sum is σ = 2891857920. Its totient is φ = 523480320.

The previous prime is 1330939969. The next prime is 1330939993. The reversal of 1330939988 is 8899390331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3253928 + ... + 3254336.

It is an arithmetic number, because the mean of its divisors is an integer number (30123520).

Almost surely, 2^1330939988 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 1330939988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1445928960).

1330939988 is an abundant number, since it is smaller than the sum of its proper divisors (1560917932).

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

1330939988 is a wasteful number, since it uses less digits than its factorization.

1330939988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 53.

The square root of 1330939988 is about 36482.0502165106. The cubic root of 1330939988 is about 1099.9834675201.

The spelling of 1330939988 in words is "one billion, three hundred thirty million, nine hundred thirty-nine thousand, nine hundred eighty-eight".