164891312163 has 6 divisors (see below), whose sum is σ = 238176339804. Its totient is φ = 109927541436.

The previous prime is 164891312141. The next prime is 164891312191. The reversal of 164891312163 is 361213198461.

164891312163 is a `hidden beast` number, since 1 + 6 + 489 + 1 + 3 + 1 + 2 + 163 = 666.

It is not a de Polignac number, because 164891312163 - 2¹² = 164891308067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164891311163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9160628445 + ... + 9160628462.

It is an arithmetic number, because the mean of its divisors is an integer number (39696056634).

Almost surely, 2^164891312163 is an apocalyptic number.

164891312163 is a deficient number, since it is larger than the sum of its proper divisors (73285027641).

164891312163 is a wasteful number, since it uses less digits than its factorization.

164891312163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18321256913 (or 18321256910 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The spelling of 164891312163 in words is "one hundred sixty-four billion, eight hundred ninety-one million, three hundred twelve thousand, one hundred sixty-three".