164838140 has 24 divisors (see below), whose sum is σ = 346423392. Its totient is φ = 65885120.

The previous prime is 164838133. The next prime is 164838169. The reversal of 164838140 is 41838461.

It is a super-2 number, since 2×164838140² = 54343224797319200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 164838140.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35345 + ... + 39735.

It is an arithmetic number, because the mean of its divisors is an integer number (14434308).

Almost surely, 2^164838140 is an apocalyptic number.

164838140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164838140 is an abundant number, since it is smaller than the sum of its proper divisors (181585252).

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

164838140 is a wasteful number, since it uses less digits than its factorization.

164838140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6277 (or 6275 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 164838140 is about 12838.9306408283. The cubic root of 164838140 is about 548.3012489324.

The spelling of 164838140 in words is "one hundred sixty-four million, eight hundred thirty-eight thousand, one hundred forty".