1669318634 has 16 divisors (see below), whose sum is σ = 2554274088. Its totient is φ = 817931712.

The previous prime is 1669318627. The next prime is 1669318709. The reversal of 1669318634 is 4368139661.

It can be written as a sum of positive squares in 4 ways, for example, as 1527637225 + 141681409 = 39085^2 + 11903^2 .

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, 83984 + ... + 101940.

Almost surely, 2^1669318634 is an apocalyptic number.

1669318634 is a deficient number, since it is larger than the sum of its proper divisors (884955454).

1669318634 is a wasteful number, since it uses less digits than its factorization.

1669318634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18889.

The product of its digits is 559872, while the sum is 47.

The square root of 1669318634 is about 40857.2959702426. The cubic root of 1669318634 is about 1186.2596192429.

The spelling of 1669318634 in words is "one billion, six hundred sixty-nine million, three hundred eighteen thousand, six hundred thirty-four".