1669360345 has 8 divisors (see below), whose sum is σ = 2041029576. Its totient is φ = 1310290176.

The previous prime is 1669360333. The next prime is 1669360351. The reversal of 1669360345 is 5430639661.

It can be written as a sum of positive squares in 4 ways, for example, as 842682841 + 826677504 = 29029^2 + 28752^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1669360345 - 2⁵ = 1669360313 is a prime.

It is a super-2 number, since 2×1669360345² = 5573527922917038050, which contains 22 as substring.

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, 3149472 + ... + 3150001.

It is an arithmetic number, because the mean of its divisors is an integer number (255128697).

Almost surely, 2^1669360345 is an apocalyptic number.

It is an amenable number.

1669360345 is a deficient number, since it is larger than the sum of its proper divisors (371669231).

1669360345 is an equidigital number, since it uses as much as digits as its factorization.

1669360345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6299531.

The product of its (nonzero) digits is 349920, while the sum is 43.

The square root of 1669360345 is about 40857.8064144418. The cubic root of 1669360345 is about 1186.2694994542.

The spelling of 1669360345 in words is "one billion, six hundred sixty-nine million, three hundred sixty thousand, three hundred forty-five".