1330987980 has 144 divisors (see below), whose sum is σ = 4376768256. Its totient is φ = 301311360.

The previous prime is 1330987949. The next prime is 1330988003. The reversal of 1330987980 is 897890331.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 312465 + ... + 316695.

It is an arithmetic number, because the mean of its divisors is an integer number (30394224).

Almost surely, 2^1330987980 is an apocalyptic number.

1330987980 is a gapful number since it is divisible by the number (10) 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 1330987980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2188384128).

1330987980 is an abundant number, since it is smaller than the sum of its proper divisors (3045780276).

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

1330987980 is a wasteful number, since it uses less digits than its factorization.

1330987980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4364 (or 4355 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 1330987980 is about 36482.7079587028. The cubic root of 1330987980 is about 1099.9966886953.

The spelling of 1330987980 in words is "one billion, three hundred thirty million, nine hundred eighty-seven thousand, nine hundred eighty".