164381236 has 12 divisors (see below), whose sum is σ = 302807680. Its totient is φ = 77864760.

The previous prime is 164381233. The next prime is 164381263. The reversal of 164381236 is 632183461.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164381233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1081380 + ... + 1081531.

Almost surely, 2^164381236 is an apocalyptic number.

It is an amenable number.

164381236 is a deficient number, since it is larger than the sum of its proper divisors (138426444).

164381236 is a wasteful number, since it uses less digits than its factorization.

164381236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162934 (or 2162932 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 164381236 is about 12821.1245996597. The cubic root of 164381236 is about 547.7941800818.

The spelling of 164381236 in words is "one hundred sixty-four million, three hundred eighty-one thousand, two hundred thirty-six".