1331330789 has 8 divisors (see below), whose sum is σ = 1364016000. Its totient is φ = 1298827296.

The previous prime is 1331330773. The next prime is 1331330801. The reversal of 1331330789 is 9870331331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1331330789 - 2⁴ = 1331330773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331330089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30539 + ... + 59960.

It is an arithmetic number, because the mean of its divisors is an integer number (170502000).

Almost surely, 2^1331330789 is an apocalyptic number.

It is an amenable number.

1331330789 is a deficient number, since it is larger than the sum of its proper divisors (32685211).

1331330789 is an equidigital number, since it uses as much as digits as its factorization.

1331330789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90859.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 1331330789 is about 36487.4058957334. The cubic root of 1331330789 is about 1100.0911188982.

The spelling of 1331330789 in words is "one billion, three hundred thirty-one million, three hundred thirty thousand, seven hundred eighty-nine".