163083905 has 4 divisors (see below), whose sum is σ = 195700692. Its totient is φ = 130467120.

The previous prime is 163083871. The next prime is 163083911. The reversal of 163083905 is 509380361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 509380361 = 7 ⋅72768623.

It can be written as a sum of positive squares in 2 ways, for example, as 62362609 + 100721296 = 7897^2 + 10036^2 .

It is not a de Polignac number, because 163083905 - 2¹⁴ = 163067521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16308386 + ... + 16308395.

It is an arithmetic number, because the mean of its divisors is an integer number (48925173).

Almost surely, 2^163083905 is an apocalyptic number.

It is an amenable number.

163083905 is a deficient number, since it is larger than the sum of its proper divisors (32616787).

163083905 is an equidigital number, since it uses as much as digits as its factorization.

163083905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32616786.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 163083905 is about 12770.4308854478. The cubic root of 163083905 is about 546.3492702374.

The spelling of 163083905 in words is "one hundred sixty-three million, eighty-three thousand, nine hundred five".