163408085 has 8 divisors (see below), whose sum is σ = 196820280. Its totient is φ = 130239424.

The previous prime is 163408079. The next prime is 163408087. The reversal of 163408085 is 580804361.

It can be written as a sum of positive squares in 4 ways, for example, as 11847364 + 151560721 = 3442^2 + 12311^2 .

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 163408085 - 2¹⁰ = 163407061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163408087) 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, 59402 + ... + 62091.

It is an arithmetic number, because the mean of its divisors is an integer number (24602535).

Almost surely, 2^163408085 is an apocalyptic number.

It is an amenable number.

163408085 is a deficient number, since it is larger than the sum of its proper divisors (33412195).

163408085 is a wasteful number, since it uses less digits than its factorization.

163408085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121767.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 163408085 is about 12783.1171863517. The cubic root of 163408085 is about 546.7110436825.

The spelling of 163408085 in words is "one hundred sixty-three million, four hundred eight thousand, eighty-five".