1329654667 has 4 divisors (see below), whose sum is σ = 1450532376. Its totient is φ = 1208776960.

The previous prime is 1329654659. The next prime is 1329654709. The reversal of 1329654667 is 7664569231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1329654667 - 2³ = 1329654659 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1329654667.

It is not an unprimeable number, because it can be changed into a prime (1329654617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60438838 + ... + 60438859.

It is an arithmetic number, because the mean of its divisors is an integer number (362633094).

Almost surely, 2^1329654667 is an apocalyptic number.

1329654667 is a deficient number, since it is larger than the sum of its proper divisors (120877709).

1329654667 is a wasteful number, since it uses less digits than its factorization.

1329654667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120877708.

The product of its digits is 1632960, while the sum is 49.

The square root of 1329654667 is about 36464.4301614601. The cubic root of 1329654667 is about 1099.6292599096.

The spelling of 1329654667 in words is "one billion, three hundred twenty-nine million, six hundred fifty-four thousand, six hundred sixty-seven".