1329279963 has 64 divisors (see below), whose sum is σ = 2167824384. Its totient is φ = 714560000.

The previous prime is 1329279947. The next prime is 1329279967. The reversal of 1329279963 is 3699729231.

It is not a de Polignac number, because 1329279963 - 2⁴ = 1329279947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1329279967) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 915388 + ... + 916838.

It is an arithmetic number, because the mean of its divisors is an integer number (33872256).

Almost surely, 2^1329279963 is an apocalyptic number.

1329279963 is a deficient number, since it is larger than the sum of its proper divisors (838544421).

1329279963 is a wasteful number, since it uses less digits than its factorization.

1329279963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1576.

The product of its digits is 1102248, while the sum is 51.

The square root of 1329279963 is about 36459.2918609235. The cubic root of 1329279963 is about 1099.5259563469.

The spelling of 1329279963 in words is "one billion, three hundred twenty-nine million, two hundred seventy-nine thousand, nine hundred sixty-three".