163259897 has 4 divisors (see below), whose sum is σ = 164545536. Its totient is φ = 161974260.

The previous prime is 163259869. The next prime is 163259933. The reversal of 163259897 is 798952361.

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: 798952361 = 479 ⋅1667959.

It is a cyclic number.

It is not a de Polignac number, because 163259897 - 2⁸ = 163259641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163259807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642629 + ... + 642882.

It is an arithmetic number, because the mean of its divisors is an integer number (41136384).

Almost surely, 2^163259897 is an apocalyptic number.

It is an amenable number.

163259897 is a deficient number, since it is larger than the sum of its proper divisors (1285639).

163259897 is a wasteful number, since it uses less digits than its factorization.

163259897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285638.

The product of its digits is 816480, while the sum is 50.

The square root of 163259897 is about 12777.3196328494. The cubic root of 163259897 is about 546.5457305270.

The spelling of 163259897 in words is "one hundred sixty-three million, two hundred fifty-nine thousand, eight hundred ninety-seven".