1689669318 has 16 divisors (see below), whose sum is σ = 3387855600. Its totient is φ = 561803616.

The previous prime is 1689669283. The next prime is 1689669323. The reversal of 1689669318 is 8139669861.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352293 + ... + 357056.

It is an arithmetic number, because the mean of its divisors is an integer number (211740975).

Almost surely, 2^1689669318 is an apocalyptic number.

1689669318 is an abundant number, since it is smaller than the sum of its proper divisors (1698186282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1689669318 is a wasteful number, since it uses less digits than its factorization.

1689669318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709751.

The product of its digits is 3359232, while the sum is 57.

The square root of 1689669318 is about 41105.5874304212. The cubic root of 1689669318 is about 1191.0607301806.

The spelling of 1689669318 in words is "one billion, six hundred eighty-nine million, six hundred sixty-nine thousand, three hundred eighteen".