163545913 has 2 divisors, whose sum is σ = 163545914. Its totient is φ = 163545912.

The previous prime is 163545911. The next prime is 163545919. The reversal of 163545913 is 319545361.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119946304 + 43599609 = 10952^2 + 6603^2 .

It is an emirp because it is prime and its reverse (319545361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163545913 - 2¹ = 163545911 is a prime.

Together with 163545911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (163545911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81772956 + 81772957.

It is an arithmetic number, because the mean of its divisors is an integer number (81772957).

Almost surely, 2^163545913 is an apocalyptic number.

It is an amenable number.

163545913 is a deficient number, since it is larger than the sum of its proper divisors (1).

163545913 is an equidigital number, since it uses as much as digits as its factorization.

163545913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 37.

The square root of 163545913 is about 12788.5070668941. The cubic root of 163545913 is about 546.8647099147.

The spelling of 163545913 in words is "one hundred sixty-three million, five hundred forty-five thousand, nine hundred thirteen".