1669849017 has 8 divisors (see below), whose sum is σ = 2240647296. Its totient is φ = 1106141712.

The previous prime is 1669849003. The next prime is 1669849039. The reversal of 1669849017 is 7109489661.

It is a happy number.

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

It is not a de Polignac number, because 1669849017 - 2¹⁸ = 1669586873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1669844017) 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, 1772193 + ... + 1773134.

It is an arithmetic number, because the mean of its divisors is an integer number (280080912).

Almost surely, 2^1669849017 is an apocalyptic number.

It is an amenable number.

1669849017 is a deficient number, since it is larger than the sum of its proper divisors (570798279).

1669849017 is a wasteful number, since it uses less digits than its factorization.

1669849017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3545487.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 1669849017 is about 40863.7861314881. The cubic root of 1669849017 is about 1186.3852404195.

The spelling of 1669849017 in words is "one billion, six hundred sixty-nine million, eight hundred forty-nine thousand, seventeen".