163166441 has 4 divisors (see below), whose sum is σ = 168792900. Its totient is φ = 157539984.

The previous prime is 163166431. The next prime is 163166483. The reversal of 163166441 is 144661361.

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 59228416 + 103938025 = 7696^2 + 10195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163166441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 163166398 and 163166407.

It is not an unprimeable number, because it can be changed into a prime (163166431) 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, 2813186 + ... + 2813243.

It is an arithmetic number, because the mean of its divisors is an integer number (42198225).

Almost surely, 2^163166441 is an apocalyptic number.

It is an amenable number.

163166441 is a deficient number, since it is larger than the sum of its proper divisors (5626459).

163166441 is an equidigital number, since it uses as much as digits as its factorization.

163166441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5626458.

The product of its digits is 10368, while the sum is 32.

The square root of 163166441 is about 12773.6620042962. The cubic root of 163166441 is about 546.4414229615.

The spelling of 163166441 in words is "one hundred sixty-three million, one hundred sixty-six thousand, four hundred forty-one".