164473847 has 4 divisors (see below), whose sum is σ = 164499720. Its totient is φ = 164447976.

The previous prime is 164473801. The next prime is 164473853. The reversal of 164473847 is 748374461.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 748374461 = 991 ⋅755171.

It is a cyclic number.

It is not a de Polignac number, because 164473847 - 2⁶ = 164473783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164473798 and 164473807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164473447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3929 + ... + 18557.

It is an arithmetic number, because the mean of its divisors is an integer number (41124930).

Almost surely, 2^164473847 is an apocalyptic number.

164473847 is a deficient number, since it is larger than the sum of its proper divisors (25873).

164473847 is a wasteful number, since it uses less digits than its factorization.

164473847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25872.

The product of its digits is 451584, while the sum is 44.

The square root of 164473847 is about 12824.7357477649. The cubic root of 164473847 is about 547.8970349732.

The spelling of 164473847 in words is "one hundred sixty-four million, four hundred seventy-three thousand, eight hundred forty-seven".