1329499451 has 8 divisors (see below), whose sum is σ = 1545181440. Its totient is φ = 1120255848.

The previous prime is 1329499447. The next prime is 1329499459. The reversal of 1329499451 is 1549949231.

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 1329499451 - 2² = 1329499447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1329499396 and 1329499405.

It is not an unprimeable number, because it can be changed into a prime (1329499459) 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 7 ways as a sum of consecutive naturals, for example, 1609151 + ... + 1609976.

It is an arithmetic number, because the mean of its divisors is an integer number (193147680).

Almost surely, 2^1329499451 is an apocalyptic number.

1329499451 is a deficient number, since it is larger than the sum of its proper divisors (215681989).

1329499451 is an equidigital number, since it uses as much as digits as its factorization.

1329499451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3219193.

The product of its digits is 349920, while the sum is 47.

The square root of 1329499451 is about 36462.3017786864. The cubic root of 1329499451 is about 1099.5864701785.

The spelling of 1329499451 in words is "one billion, three hundred twenty-nine million, four hundred ninety-nine thousand, four hundred fifty-one".