164687380 has 96 divisors (see below), whose sum is σ = 411505920. Its totient is φ = 54574080.

The previous prime is 164687371. The next prime is 164687417. The reversal of 164687380 is 83786461.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 254217 + ... + 254863.

It is an arithmetic number, because the mean of its divisors is an integer number (4286520).

Almost surely, 2^164687380 is an apocalyptic number.

164687380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164687380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205752960).

164687380 is an abundant number, since it is smaller than the sum of its proper divisors (246818540).

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

164687380 is a wasteful number, since it uses less digits than its factorization.

164687380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 164687380 is about 12833.0580922865. The cubic root of 164687380 is about 548.1340402394.

The spelling of 164687380 in words is "one hundred sixty-four million, six hundred eighty-seven thousand, three hundred eighty".