164376362181 has 4 divisors (see below), whose sum is σ = 219168482912. Its totient is φ = 109584241452.

The previous prime is 164376362167. The next prime is 164376362191. The reversal of 164376362181 is 181263673461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 164376362181 - 2¹⁹ = 164375837893 is a prime.

It is a super-2 number, since 2×164376362181² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164376362181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164376362191) 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 3 ways as a sum of consecutive naturals, for example, 27396060361 + ... + 27396060366.

It is an arithmetic number, because the mean of its divisors is an integer number (54792120728).

Almost surely, 2^164376362181 is an apocalyptic number.

It is an amenable number.

164376362181 is a deficient number, since it is larger than the sum of its proper divisors (54792120731).

164376362181 is an equidigital number, since it uses as much as digits as its factorization.

164376362181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54792120730.

The product of its digits is 870912, while the sum is 48.

The spelling of 164376362181 in words is "one hundred sixty-four billion, three hundred seventy-six million, three hundred sixty-two thousand, one hundred eighty-one".