163478879 has 4 divisors (see below), whose sum is σ = 163677384. Its totient is φ = 163280376.

The previous prime is 163478863. The next prime is 163478891. The reversal of 163478879 is 978874361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978874361 = 83 ⋅11793667.

It is a cyclic number.

It is not a de Polignac number, because 163478879 - 2⁴ = 163478863 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163478879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163478899) 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, 98012 + ... + 99665.

It is an arithmetic number, because the mean of its divisors is an integer number (40919346).

Almost surely, 2^163478879 is an apocalyptic number.

163478879 is a deficient number, since it is larger than the sum of its proper divisors (198505).

163478879 is an equidigital number, since it uses as much as digits as its factorization.

163478879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198504.

The product of its digits is 2032128, while the sum is 53.

The square root of 163478879 is about 12785.8859294145. The cubic root of 163478879 is about 546.7899836233.

The spelling of 163478879 in words is "one hundred sixty-three million, four hundred seventy-eight thousand, eight hundred seventy-nine".