1331989163320 has 64 divisors (see below), whose sum is σ = 3004619904000. Its totient is φ = 531437355648.

The previous prime is 1331989163279. The next prime is 1331989163327. The reversal of 1331989163320 is 233619891331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331989163327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83981551 + ... + 83997409.

It is an arithmetic number, because the mean of its divisors is an integer number (46947186000).

Almost surely, 2^{1331989163320} is an apocalyptic number.

1331989163320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331989163320 is an abundant number, since it is smaller than the sum of its proper divisors (1672630740680).

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

1331989163320 is a wasteful number, since it uses less digits than its factorization.

1331989163320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21092 (or 21088 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 49.

The spelling of 1331989163320 in words is "one trillion, three hundred thirty-one billion, nine hundred eighty-nine million, one hundred sixty-three thousand, three hundred twenty".