1329799265 has 16 divisors (see below), whose sum is σ = 1681499520. Its totient is φ = 1006796160.

The previous prime is 1329799253. The next prime is 1329799271. The reversal of 1329799265 is 5629979231.

It is not a de Polignac number, because 1329799265 - 2⁶ = 1329799201 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91157 + ... + 104733.

It is an arithmetic number, because the mean of its divisors is an integer number (105093720).

Almost surely, 2^1329799265 is an apocalyptic number.

It is an amenable number.

1329799265 is a deficient number, since it is larger than the sum of its proper divisors (351700255).

1329799265 is a wasteful number, since it uses less digits than its factorization.

1329799265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14632.

The product of its digits is 1837080, while the sum is 53.

The square root of 1329799265 is about 36466.4128342781. The cubic root of 1329799265 is about 1099.6691194892.

The spelling of 1329799265 in words is "one billion, three hundred twenty-nine million, seven hundred ninety-nine thousand, two hundred sixty-five".