164847845 has 4 divisors (see below), whose sum is σ = 197817420. Its totient is φ = 131878272.

The previous prime is 164847841. The next prime is 164847883. The reversal of 164847845 is 548748461.

164847845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 112169281 + 52678564 = 10591^2 + 7258^2 .

It is a cyclic number.

It is not a de Polignac number, because 164847845 - 2² = 164847841 is a prime.

It is a super-2 number, since 2×164847845² = 54349624002288050, 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 164847845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164847841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16484780 + ... + 16484789.

It is an arithmetic number, because the mean of its divisors is an integer number (49454355).

Almost surely, 2^164847845 is an apocalyptic number.

It is an amenable number.

164847845 is a deficient number, since it is larger than the sum of its proper divisors (32969575).

164847845 is an equidigital number, since it uses as much as digits as its factorization.

164847845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32969574.

The product of its digits is 860160, while the sum is 47.

The square root of 164847845 is about 12839.3085873033. The cubic root of 164847845 is about 548.3120093045.

The spelling of 164847845 in words is "one hundred sixty-four million, eight hundred forty-seven thousand, eight hundred forty-five".