164545863 has 4 divisors (see below), whose sum is σ = 219394488. Its totient is φ = 109697240.

The previous prime is 164545859. The next prime is 164545949. The reversal of 164545863 is 368545461.

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

It is a cyclic number.

It is not a de Polignac number, because 164545863 - 2² = 164545859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164545963) 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, 27424308 + ... + 27424313.

It is an arithmetic number, because the mean of its divisors is an integer number (54848622).

Almost surely, 2^164545863 is an apocalyptic number.

164545863 is a deficient number, since it is larger than the sum of its proper divisors (54848625).

164545863 is an equidigital number, since it uses as much as digits as its factorization.

164545863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54848624.

The product of its digits is 345600, while the sum is 42.

The square root of 164545863 is about 12827.5431396663. The cubic root of 164545863 is about 547.9769901273.

The spelling of 164545863 in words is "one hundred sixty-four million, five hundred forty-five thousand, eight hundred sixty-three".