163117851 has 16 divisors (see below), whose sum is σ = 234456096. Its totient is φ = 100279296.

The previous prime is 163117847. The next prime is 163117853. The reversal of 163117851 is 158711361.

It is not a de Polignac number, because 163117851 - 2² = 163117847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163117853) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 61611 + ... + 64203.

It is an arithmetic number, because the mean of its divisors is an integer number (14653506).

Almost surely, 2^163117851 is an apocalyptic number.

163117851 is a deficient number, since it is larger than the sum of its proper divisors (71338245).

163117851 is a wasteful number, since it uses less digits than its factorization.

163117851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222.

The product of its digits is 5040, while the sum is 33.

The square root of 163117851 is about 12771.7599022218. The cubic root of 163117851 is about 546.3871752362.

The spelling of 163117851 in words is "one hundred sixty-three million, one hundred seventeen thousand, eight hundred fifty-one".