163650505 has 8 divisors (see below), whose sum is σ = 196690824. Its totient is φ = 130713600.

The previous prime is 163650493. The next prime is 163650511. The reversal of 163650505 is 505056361.

It can be written as a sum of positive squares in 4 ways, for example, as 7974976 + 155675529 = 2824^2 + 12477^2 .

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

It is not a de Polignac number, because 163650505 - 2¹³ = 163642313 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 22326 + ... + 28735.

It is an arithmetic number, because the mean of its divisors is an integer number (24586353).

Almost surely, 2^163650505 is an apocalyptic number.

It is an amenable number.

163650505 is a deficient number, since it is larger than the sum of its proper divisors (33040319).

163650505 is an equidigital number, since it uses as much as digits as its factorization.

163650505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51707.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 163650505 is about 12792.5957100191. The cubic root of 163650505 is about 546.9812632908.

The spelling of 163650505 in words is "one hundred sixty-three million, six hundred fifty thousand, five hundred five".