1669318513 has 8 divisors (see below), whose sum is σ = 1676292480. Its totient is φ = 1662355920.

The previous prime is 1669318507. The next prime is 1669318517. The reversal of 1669318513 is 3158139661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1669318513 is a prime.

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 1669318513.

It is not an unprimeable number, because it can be changed into a prime (1669318517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407208 + ... + 411286.

It is an arithmetic number, because the mean of its divisors is an integer number (209536560).

Almost surely, 2^1669318513 is an apocalyptic number.

It is an amenable number.

1669318513 is a deficient number, since it is larger than the sum of its proper divisors (6973967).

1669318513 is a wasteful number, since it uses less digits than its factorization.

1669318513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5687.

The product of its digits is 116640, while the sum is 43.

The square root of 1669318513 is about 40857.2944894789. The cubic root of 1669318513 is about 1186.2595905810.

The spelling of 1669318513 in words is "one billion, six hundred sixty-nine million, three hundred eighteen thousand, five hundred thirteen".