164485398 has 64 divisors (see below), whose sum is σ = 411586560. Its totient is φ = 42573600.

The previous prime is 164485393. The next prime is 164485417. The reversal of 164485398 is 893584461.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164485393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202413 + ... + 203223.

It is an arithmetic number, because the mean of its divisors is an integer number (6431040).

Almost surely, 2^164485398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164485398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205793280).

164485398 is an abundant number, since it is smaller than the sum of its proper divisors (247101162).

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

164485398 is a wasteful number, since it uses less digits than its factorization.

164485398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273.

The product of its digits is 829440, while the sum is 48.

The square root of 164485398 is about 12825.1860805214. The cubic root of 164485398 is about 547.9098609444.

The spelling of 164485398 in words is "one hundred sixty-four million, four hundred eighty-five thousand, three hundred ninety-eight".