164407816 has 32 divisors (see below), whose sum is σ = 331287840. Its totient is φ = 76209408.

The previous prime is 164407801. The next prime is 164407889. The reversal of 164407816 is 618704461.

It is a happy number.

It is a super-3 number, since 3×164407816³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 91 + ... + 18133.

It is an arithmetic number, because the mean of its divisors is an integer number (10352745).

Almost surely, 2^164407816 is an apocalyptic number.

It is an amenable number.

164407816 is an abundant number, since it is smaller than the sum of its proper divisors (166880024).

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

164407816 is a wasteful number, since it uses less digits than its factorization.

164407816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18133 (or 18129 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 164407816 is about 12822.1611282966. The cubic root of 164407816 is about 547.8237041016.

The spelling of 164407816 in words is "one hundred sixty-four million, four hundred seven thousand, eight hundred sixteen".