164243635 has 8 divisors (see below), whose sum is σ = 197217216. Its totient is φ = 131311680.

The previous prime is 164243633. The next prime is 164243689. The reversal of 164243635 is 536342461.

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

It is not a de Polignac number, because 164243635 - 2¹ = 164243633 is a prime.

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 164243635.

It is not an unprimeable number, because it can be changed into a prime (164243633) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 939 + ... + 18148.

It is an arithmetic number, because the mean of its divisors is an integer number (24652152).

Almost surely, 2^164243635 is an apocalyptic number.

164243635 is a deficient number, since it is larger than the sum of its proper divisors (32973581).

164243635 is a wasteful number, since it uses less digits than its factorization.

164243635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20813.

The product of its digits is 51840, while the sum is 34.

The square root of 164243635 is about 12815.7572932699. The cubic root of 164243635 is about 547.6412873898.

The spelling of 164243635 in words is "one hundred sixty-four million, two hundred forty-three thousand, six hundred thirty-five".