163416971 has 4 divisors (see below), whose sum is σ = 173029752. Its totient is φ = 153804192.

The previous prime is 163416959. The next prime is 163416973. The reversal of 163416971 is 179614361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179614361 = 383 ⋅468967.

It is a cyclic number.

It is not a de Polignac number, because 163416971 - 2⁶ = 163416907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163416973) 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, 4806365 + ... + 4806398.

It is an arithmetic number, because the mean of its divisors is an integer number (43257438).

Almost surely, 2^163416971 is an apocalyptic number.

163416971 is a deficient number, since it is larger than the sum of its proper divisors (9612781).

163416971 is an equidigital number, since it uses as much as digits as its factorization.

163416971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9612780.

The product of its digits is 27216, while the sum is 38.

The square root of 163416971 is about 12783.4647494332. The cubic root of 163416971 is about 546.7209534049.

The spelling of 163416971 in words is "one hundred sixty-three million, four hundred sixteen thousand, nine hundred seventy-one".