1329987018 has 16 divisors (see below), whose sum is σ = 2666482560. Its totient is φ = 442244256.

The previous prime is 1329986989. The next prime is 1329987031. The reversal of 1329987018 is 8107899231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268530 + ... + 273437.

It is an arithmetic number, because the mean of its divisors is an integer number (166655160).

Almost surely, 2^1329987018 is an apocalyptic number.

1329987018 is an abundant number, since it is smaller than the sum of its proper divisors (1336495542).

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

1329987018 is a wasteful number, since it uses less digits than its factorization.

1329987018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542381.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 1329987018 is about 36468.9870712089. The cubic root of 1329987018 is about 1099.7208707737.

The spelling of 1329987018 in words is "one billion, three hundred twenty-nine million, nine hundred eighty-seven thousand, eighteen".