162164991 has 8 divisors (see below), whose sum is σ = 219447424. Its totient is φ = 106496280.

The previous prime is 162164957. The next prime is 162165007. The reversal of 162164991 is 199461261.

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

It is not a de Polignac number, because 162164991 - 2¹¹ = 162162943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162164591) 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 7 ways as a sum of consecutive naturals, for example, 403195 + ... + 403596.

It is an arithmetic number, because the mean of its divisors is an integer number (27430928).

Almost surely, 2^162164991 is an apocalyptic number.

162164991 is a deficient number, since it is larger than the sum of its proper divisors (57282433).

162164991 is an equidigital number, since it uses as much as digits as its factorization.

162164991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806861.

The product of its digits is 23328, while the sum is 39.

The square root of 162164991 is about 12734.4018705238. The cubic root of 162164991 is about 545.3211820595.

The spelling of 162164991 in words is "one hundred sixty-two million, one hundred sixty-four thousand, nine hundred ninety-one".