163115845 has 4 divisors (see below), whose sum is σ = 195739020. Its totient is φ = 130492672.

The previous prime is 163115819. The next prime is 163115851. The reversal of 163115845 is 548511361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51581124 + 111534721 = 7182^2 + 10561^2 .

It is a cyclic number.

It is not a de Polignac number, because 163115845 - 2⁷ = 163115717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163115845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16311580 + ... + 16311589.

It is an arithmetic number, because the mean of its divisors is an integer number (48934755).

Almost surely, 2^163115845 is an apocalyptic number.

It is an amenable number.

163115845 is a deficient number, since it is larger than the sum of its proper divisors (32623175).

163115845 is an equidigital number, since it uses as much as digits as its factorization.

163115845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32623174.

The product of its digits is 14400, while the sum is 34.

The square root of 163115845 is about 12771.6813693421. The cubic root of 163115845 is about 546.3849354299.

The spelling of 163115845 in words is "one hundred sixty-three million, one hundred fifteen thousand, eight hundred forty-five".