164918420 has 12 divisors (see below), whose sum is σ = 346328724. Its totient is φ = 65967360.

The previous prime is 164918407. The next prime is 164918431. The reversal of 164918420 is 24819461.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16760836 + 148157584 = 4094^2 + 12172^2 .

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 3 ways as a sum of consecutive naturals, for example, 4122941 + ... + 4122980.

It is an arithmetic number, because the mean of its divisors is an integer number (28860727).

Almost surely, 2^164918420 is an apocalyptic number.

164918420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164918420 is an abundant number, since it is smaller than the sum of its proper divisors (181410304).

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

164918420 is a wasteful number, since it uses less digits than its factorization.

164918420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8245930 (or 8245928 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 164918420 is about 12842.0566888641. The cubic root of 164918420 is about 548.3902462973.

The spelling of 164918420 in words is "one hundred sixty-four million, nine hundred eighteen thousand, four hundred twenty".