164405434 has 8 divisors (see below), whose sum is σ = 246758400. Its totient is φ = 82152636.

The previous prime is 164405429. The next prime is 164405443. The reversal of 164405434 is 434504461.

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

It is a super-3 number, since 3×164405434³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164405396 and 164405405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20794 + ... + 27589.

It is an arithmetic number, because the mean of its divisors is an integer number (30844800).

Almost surely, 2^164405434 is an apocalyptic number.

164405434 is a deficient number, since it is larger than the sum of its proper divisors (82352966).

164405434 is a wasteful number, since it uses less digits than its factorization.

164405434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50084.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 164405434 is about 12822.0682419023. The cubic root of 164405434 is about 547.8210583994.

Adding to 164405434 its reverse (434504461), we get a palindrome (598909895).

The spelling of 164405434 in words is "one hundred sixty-four million, four hundred five thousand, four hundred thirty-four".