1669189418 has 16 divisors (see below), whose sum is σ = 2697408000. Its totient is φ = 770102256.

The previous prime is 1669189411. The next prime is 1669189427. The reversal of 1669189418 is 8149819661.

It is a self number, because there is not a number n which added to its sum of digits gives 1669189418.

It is not an unprimeable number, because it can be changed into a prime (1669189411) 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, 67271 + ... + 88677.

It is an arithmetic number, because the mean of its divisors is an integer number (168588000).

Almost surely, 2^1669189418 is an apocalyptic number.

1669189418 is a deficient number, since it is larger than the sum of its proper divisors (1028218582).

1669189418 is a wasteful number, since it uses less digits than its factorization.

1669189418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24421.

The product of its digits is 746496, while the sum is 53.

The square root of 1669189418 is about 40855.7146308812. The cubic root of 1669189418 is about 1186.2290104114.

The spelling of 1669189418 in words is "one billion, six hundred sixty-nine million, one hundred eighty-nine thousand, four hundred eighteen".