1329613377 has 4 divisors (see below), whose sum is σ = 1772817840. Its totient is φ = 886408916.

The previous prime is 1329613357. The next prime is 1329613381. The reversal of 1329613377 is 7733169231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1329613377 - 2⁷ = 1329613249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1329613357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221602227 + ... + 221602232.

It is an arithmetic number, because the mean of its divisors is an integer number (443204460).

Almost surely, 2^1329613377 is an apocalyptic number.

It is an amenable number.

1329613377 is a deficient number, since it is larger than the sum of its proper divisors (443204463).

1329613377 is an equidigital number, since it uses as much as digits as its factorization.

1329613377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443204462.

The product of its digits is 142884, while the sum is 42.

The square root of 1329613377 is about 36463.8639888863. The cubic root of 1329613377 is about 1099.6178774649.

The spelling of 1329613377 in words is "one billion, three hundred twenty-nine million, six hundred thirteen thousand, three hundred seventy-seven".