163108945 has 8 divisors (see below), whose sum is σ = 196287336. Its totient is φ = 130116096.

The previous prime is 163108943. The next prime is 163108951. The reversal of 163108945 is 549801361.

It can be written as a sum of positive squares in 4 ways, for example, as 10042561 + 153066384 = 3169^2 + 12372^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163108945 - 2¹ = 163108943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163108943) 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 7 ways as a sum of consecutive naturals, for example, 44442 + ... + 47971.

It is an arithmetic number, because the mean of its divisors is an integer number (24535917).

Almost surely, 2^163108945 is an apocalyptic number.

It is an amenable number.

163108945 is a deficient number, since it is larger than the sum of its proper divisors (33178391).

163108945 is an equidigital number, since it uses as much as digits as its factorization.

163108945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92771.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 163108945 is about 12771.4112376041. The cubic root of 163108945 is about 546.3772310706.

The spelling of 163108945 in words is "one hundred sixty-three million, one hundred eight thousand, nine hundred forty-five".