164419188 has 12 divisors (see below), whose sum is σ = 383644800. Its totient is φ = 54806392.

The previous prime is 164419187. The next prime is 164419201. The reversal of 164419188 is 881914461.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×164419188³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164419187) 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, 6850788 + ... + 6850811.

It is an arithmetic number, because the mean of its divisors is an integer number (31970400).

Almost surely, 2^164419188 is an apocalyptic number.

It is an amenable number.

164419188 is an abundant number, since it is smaller than the sum of its proper divisors (219225612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164419188 is a wasteful number, since it uses less digits than its factorization.

164419188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13701606 (or 13701604 counting only the distinct ones).

The product of its digits is 55296, while the sum is 42.

The square root of 164419188 is about 12822.6045716149. The cubic root of 164419188 is about 547.8363347005.

The spelling of 164419188 in words is "one hundred sixty-four million, four hundred nineteen thousand, one hundred eighty-eight".