164422091 has 4 divisors (see below), whose sum is σ = 164454192. Its totient is φ = 164389992.

The previous prime is 164422073. The next prime is 164422099. The reversal of 164422091 is 190224461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164422091 - 2¹⁰ = 164421067 is a prime.

It is a super-3 number, since 3×164422091³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164422099) 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, 6455 + ... + 19248.

It is an arithmetic number, because the mean of its divisors is an integer number (41113548).

Almost surely, 2^164422091 is an apocalyptic number.

164422091 is a deficient number, since it is larger than the sum of its proper divisors (32101).

164422091 is an equidigital number, since it uses as much as digits as its factorization.

164422091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32100.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 164422091 is about 12822.7177696462. The cubic root of 164422091 is about 547.8395588974.

The spelling of 164422091 in words is "one hundred sixty-four million, four hundred twenty-two thousand, ninety-one".