1669288904 has 16 divisors (see below), whose sum is σ = 3130836300. Its totient is φ = 834399232.

The previous prime is 1669288897. The next prime is 1669288931. The reversal of 1669288904 is 4098829661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1210900804 + 458388100 = 34798^2 + 21410^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92 + ... + 57780.

Almost surely, 2^1669288904 is an apocalyptic number.

It is an amenable number.

1669288904 is a deficient number, since it is larger than the sum of its proper divisors (1461547396).

1669288904 is a wasteful number, since it uses less digits than its factorization.

1669288904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61312 (or 61308 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 53.

The square root of 1669288904 is about 40856.9321413148. The cubic root of 1669288904 is about 1186.2525769069.

The spelling of 1669288904 in words is "one billion, six hundred sixty-nine million, two hundred eighty-eight thousand, nine hundred four".