1671489717 has 16 divisors (see below), whose sum is σ = 2395868160. Its totient is φ = 1033214832.

The previous prime is 1671489709. The next prime is 1671489719. The reversal of 1671489717 is 7179841761.

It is not a de Polignac number, because 1671489717 - 2³ = 1671489709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1671489717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671489719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309283 + ... + 314640.

It is an arithmetic number, because the mean of its divisors is an integer number (149741760).

Almost surely, 2^1671489717 is an apocalyptic number.

It is an amenable number.

1671489717 is a deficient number, since it is larger than the sum of its proper divisors (724378443).

1671489717 is a wasteful number, since it uses less digits than its factorization.

1671489717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623992.

The product of its digits is 592704, while the sum is 51.

The square root of 1671489717 is about 40883.8564350282. The cubic root of 1671489717 is about 1186.7736717655.

The spelling of 1671489717 in words is "one billion, six hundred seventy-one million, four hundred eighty-nine thousand, seven hundred seventeen".