163004641 has 4 divisors (see below), whose sum is σ = 163030212. Its totient is φ = 162979072.

The previous prime is 163004623. The next prime is 163004689. The reversal of 163004641 is 146400361.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 125440000 + 37564641 = 11200^2 + 6129^2 .

It is a cyclic number.

It is not a de Polignac number, because 163004641 - 2⁵ = 163004609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163004141) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5385 + ... + 18841.

It is an arithmetic number, because the mean of its divisors is an integer number (40757553).

Almost surely, 2^163004641 is an apocalyptic number.

It is an amenable number.

163004641 is a deficient number, since it is larger than the sum of its proper divisors (25571).

163004641 is a wasteful number, since it uses less digits than its factorization.

163004641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25570.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 163004641 is about 12767.3270890974. The cubic root of 163004641 is about 546.2607414798.

The spelling of 163004641 in words is "one hundred sixty-three million, four thousand, six hundred forty-one".