164243634 has 8 divisors (see below), whose sum is σ = 328487280. Its totient is φ = 54747876.

The previous prime is 164243633. The next prime is 164243689. The reversal of 164243634 is 436342461.

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

164243634 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 164243595 and 164243604.

It is not an unprimeable number, because it can be changed into a prime (164243633) 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, 13686964 + ... + 13686975.

It is an arithmetic number, because the mean of its divisors is an integer number (41060910).

Almost surely, 2^164243634 is an apocalyptic number.

164243634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

164243634 is a wasteful number, since it uses less digits than its factorization.

164243634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27373944.

The product of its digits is 41472, while the sum is 33.

The square root of 164243634 is about 12815.7572542554. The cubic root of 164243634 is about 547.6412862783.

The spelling of 164243634 in words is "one hundred sixty-four million, two hundred forty-three thousand, six hundred thirty-four".