164161836 has 48 divisors (see below), whose sum is σ = 432835200. Its totient is φ = 53791056.

The previous prime is 164161819. The next prime is 164161847. The reversal of 164161836 is 638161461.

164161836 is a `hidden beast` number, since 1 + 6 + 4 + 1 + 618 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 164161836.

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 15 ways as a sum of consecutive naturals, for example, 6510 + ... + 19253.

It is an arithmetic number, because the mean of its divisors is an integer number (9017400).

Almost surely, 2^164161836 is an apocalyptic number.

It is an amenable number.

164161836 is an abundant number, since it is smaller than the sum of its proper divisors (268673364).

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

164161836 is a wasteful number, since it uses less digits than its factorization.

164161836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25835 (or 25827 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 164161836 is about 12812.5655510518. The cubic root of 164161836 is about 547.5503575374.

The spelling of 164161836 in words is "one hundred sixty-four million, one hundred sixty-one thousand, eight hundred thirty-six".