163120505 has 8 divisors (see below), whose sum is σ = 202494600. Its totient is φ = 125996416.

The previous prime is 163120493. The next prime is 163120519. The reversal of 163120505 is 505021361.

163120505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 66373609 + 96746896 = 8147^2 + 9836^2 .

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

It is not a de Polignac number, because 163120505 - 2¹⁴ = 163104121 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562340 + ... + 562629.

It is an arithmetic number, because the mean of its divisors is an integer number (25311825).

Almost surely, 2^163120505 is an apocalyptic number.

It is an amenable number.

163120505 is a deficient number, since it is larger than the sum of its proper divisors (39374095).

163120505 is a wasteful number, since it uses less digits than its factorization.

163120505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125003.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 163120505 is about 12771.8638029068. The cubic root of 163120505 is about 546.3901385409.

Adding to 163120505 its reverse (505021361), we get a palindrome (668141866).

The spelling of 163120505 in words is "one hundred sixty-three million, one hundred twenty thousand, five hundred five".