163205481 has 8 divisors (see below), whose sum is σ = 219049024. Its totient is φ = 108082800.

The previous prime is 163205467. The next prime is 163205513. The reversal of 163205481 is 184502361.

163205481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 163205481 - 2²¹ = 161108329 is a prime.

It is a super-2 number, since 2×163205481² = 53272058056882722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163205411) 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, 179686 + ... + 180591.

It is an arithmetic number, because the mean of its divisors is an integer number (27381128).

Almost surely, 2^163205481 is an apocalyptic number.

It is an amenable number.

163205481 is a deficient number, since it is larger than the sum of its proper divisors (55843543).

163205481 is a wasteful number, since it uses less digits than its factorization.

163205481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360431.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 163205481 is about 12775.1900572946. The cubic root of 163205481 is about 546.4850009011.

The spelling of 163205481 in words is "one hundred sixty-three million, two hundred five thousand, four hundred eighty-one".