1671816966 has 8 divisors (see below), whose sum is σ = 3343633944. Its totient is φ = 557272320.

The previous prime is 1671816947. The next prime is 1671816967. The reversal of 1671816966 is 6696181761.

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

1671816966 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671816967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139318075 + ... + 139318086.

It is an arithmetic number, because the mean of its divisors is an integer number (417954243).

Almost surely, 2^1671816966 is an apocalyptic number.

1671816966 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1671816966 is a wasteful number, since it uses less digits than its factorization.

1671816966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278636166.

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

The square root of 1671816966 is about 40887.8584178727. The cubic root of 1671816966 is about 1186.8511166840.

The spelling of 1671816966 in words is "one billion, six hundred seventy-one million, eight hundred sixteen thousand, nine hundred sixty-six".