163161545 has 8 divisors (see below), whose sum is σ = 196876680. Its totient is φ = 129807360.

The previous prime is 163161541. The next prime is 163161553. The reversal of 163161545 is 545161361.

It can be written as a sum of positive squares in 4 ways, for example, as 5508409 + 157653136 = 2347^2 + 12556^2 .

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

It is not a de Polignac number, because 163161545 - 2² = 163161541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163161541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89240 + ... + 91049.

It is an arithmetic number, because the mean of its divisors is an integer number (24609585).

Almost surely, 2^163161545 is an apocalyptic number.

It is an amenable number.

163161545 is a deficient number, since it is larger than the sum of its proper divisors (33715135).

163161545 is a wasteful number, since it uses less digits than its factorization.

163161545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180475.

The product of its digits is 10800, while the sum is 32.

The square root of 163161545 is about 12773.4703585204. The cubic root of 163161545 is about 546.4359573687.

The spelling of 163161545 in words is "one hundred sixty-three million, one hundred sixty-one thousand, five hundred forty-five".