164175487 has 4 divisors (see below), whose sum is σ = 187629136. Its totient is φ = 140721840.

The previous prime is 164175481. The next prime is 164175547. The reversal of 164175487 is 784571461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784571461 = 139 ⋅5644399.

It is a de Polignac number, because none of the positive numbers 2^k-164175487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164175481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11726814 + ... + 11726827.

It is an arithmetic number, because the mean of its divisors is an integer number (46907284).

Almost surely, 2^164175487 is an apocalyptic number.

164175487 is a deficient number, since it is larger than the sum of its proper divisors (23453649).

164175487 is an equidigital number, since it uses as much as digits as its factorization.

164175487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23453648.

The product of its digits is 188160, while the sum is 43.

The square root of 164175487 is about 12813.0982592034. The cubic root of 164175487 is about 547.5655344363.

It can be divided in two parts, 16417 and 5487, that added together give a square (21904 = 148²).

The spelling of 164175487 in words is "one hundred sixty-four million, one hundred seventy-five thousand, four hundred eighty-seven".