1669135330 has 16 divisors (see below), whose sum is σ = 3016138680. Its totient is φ = 665055232.

The previous prime is 1669135319. The next prime is 1669135331. The reversal of 1669135330 is 335319661.

It can be written as a sum of positive squares in 4 ways, for example, as 1595123721 + 74011609 = 39939^2 + 8603^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1669135330.

It is not an unprimeable number, because it can be changed into a prime (1669135331) 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, 322165 + ... + 327304.

Almost surely, 2^1669135330 is an apocalyptic number.

1669135330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1669135330 is a deficient number, since it is larger than the sum of its proper divisors (1347003350).

1669135330 is a wasteful number, since it uses less digits than its factorization.

1669135330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649733.

The product of its (nonzero) digits is 43740, while the sum is 37.

The square root of 1669135330 is about 40855.0526862957. The cubic root of 1669135330 is about 1186.2161975161.

The spelling of 1669135330 in words is "one billion, six hundred sixty-nine million, one hundred thirty-five thousand, three hundred thirty".