163197797 has 4 divisors (see below), whose sum is σ = 186511776. Its totient is φ = 139883820.

The previous prime is 163197767. The next prime is 163197799. The reversal of 163197797 is 797791361.

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 an emirpimes, since its reverse is a distinct semiprime: 797791361 = 19 ⋅41989019.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163197797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163197799) 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, 11656979 + ... + 11656992.

It is an arithmetic number, because the mean of its divisors is an integer number (46627944).

Almost surely, 2^163197797 is an apocalyptic number.

It is an amenable number.

163197797 is a deficient number, since it is larger than the sum of its proper divisors (23313979).

163197797 is an equidigital number, since it uses as much as digits as its factorization.

163197797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23313978.

The product of its digits is 500094, while the sum is 50.

The square root of 163197797 is about 12774.8893145890. The cubic root of 163197797 is about 546.4764242761.

The spelling of 163197797 in words is "one hundred sixty-three million, one hundred ninety-seven thousand, seven hundred ninety-seven".