813163166 has 8 divisors (see below), whose sum is σ = 1222728240. Its totient is φ = 405587088.

The previous prime is 813163151. The next prime is 813163181. The reversal of 813163166 is 661361318.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (813163151) and next prime (813163181).

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

It is a super-2 number, since 2×813163166² = 1322468669078287112, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496226 + ... + 497861.

It is an arithmetic number, because the mean of its divisors is an integer number (152841030).

Almost surely, 2^813163166 is an apocalyptic number.

813163166 is a deficient number, since it is larger than the sum of its proper divisors (409565074).

813163166 is a wasteful number, since it uses less digits than its factorization.

813163166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994498.

The product of its digits is 15552, while the sum is 35.

The square root of 813163166 is about 28516.0159559501. The cubic root of 813163166 is about 933.3815944716.

The spelling of 813163166 in words is "eight hundred thirteen million, one hundred sixty-three thousand, one hundred sixty-six".