163245161 has 4 divisors (see below), whose sum is σ = 163270800. Its totient is φ = 163219524.

The previous prime is 163245139. The next prime is 163245193. The reversal of 163245161 is 161542361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 161542361 = 2213 ⋅72997.

It is a cyclic number.

It is not a de Polignac number, because 163245161 - 2⁶ = 163245097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163245361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4850 + ... + 18708.

It is an arithmetic number, because the mean of its divisors is an integer number (40817700).

Almost surely, 2^163245161 is an apocalyptic number.

It is an amenable number.

163245161 is a deficient number, since it is larger than the sum of its proper divisors (25639).

163245161 is a wasteful number, since it uses less digits than its factorization.

163245161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25638.

The product of its digits is 4320, while the sum is 29.

The square root of 163245161 is about 12776.7429730742. The cubic root of 163245161 is about 546.5292861126.

The spelling of 163245161 in words is "one hundred sixty-three million, two hundred forty-five thousand, one hundred sixty-one".