1329297517 has 4 divisors (see below), whose sum is σ = 1329370560. Its totient is φ = 1329224476.

The previous prime is 1329297499. The next prime is 1329297533. The reversal of 1329297517 is 7157929231.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1329297517 - 2²⁷ = 1195079789 is a prime.

It is a super-3 number, since 3×1329297517³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329297917) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15084 + ... + 53722.

It is an arithmetic number, because the mean of its divisors is an integer number (332342640).

Almost surely, 2^1329297517 is an apocalyptic number.

It is an amenable number.

1329297517 is a deficient number, since it is larger than the sum of its proper divisors (73043).

1329297517 is an equidigital number, since it uses as much as digits as its factorization.

1329297517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73042.

The product of its digits is 238140, while the sum is 46.

The square root of 1329297517 is about 36459.5325943710. The cubic root of 1329297517 is about 1099.5307963089.

The spelling of 1329297517 in words is "one billion, three hundred twenty-nine million, two hundred ninety-seven thousand, five hundred seventeen".