8197451966 has 8 divisors (see below), whose sum is σ = 13414012344. Its totient is φ = 3726114520.

The previous prime is 8197451963. The next prime is 8197451989. The reversal of 8197451966 is 6691547918.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8197451963) 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, 186305705 + ... + 186305748.

It is an arithmetic number, because the mean of its divisors is an integer number (1676751543).

Almost surely, 2^8197451966 is an apocalyptic number.

8197451966 is a deficient number, since it is larger than the sum of its proper divisors (5216560378).

8197451966 is a wasteful number, since it uses less digits than its factorization.

8197451966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372611466.

The product of its digits is 3265920, while the sum is 56.

The square root of 8197451966 is about 90539.7811241004. The cubic root of 8197451966 is about 2016.3207842233.

The spelling of 8197451966 in words is "eight billion, one hundred ninety-seven million, four hundred fifty-one thousand, nine hundred sixty-six".