164561163 has 16 divisors (see below), whose sum is σ = 242681376. Its totient is φ = 98530560.

The previous prime is 164561161. The next prime is 164561191. The reversal of 164561163 is 361165461.

It is not a de Polignac number, because 164561163 - 2¹ = 164561161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164561161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55578 + ... + 58463.

It is an arithmetic number, because the mean of its divisors is an integer number (15167586).

Almost surely, 2^164561163 is an apocalyptic number.

164561163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

164561163 is a deficient number, since it is larger than the sum of its proper divisors (78120213).

164561163 is a wasteful number, since it uses less digits than its factorization.

164561163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114094.

The product of its digits is 12960, while the sum is 33.

The square root of 164561163 is about 12828.1394987738. The cubic root of 164561163 is about 547.9939738180.

The spelling of 164561163 in words is "one hundred sixty-four million, five hundred sixty-one thousand, one hundred sixty-three".