978020163 has 20 divisors (see below), whose sum is σ = 1464530760. Its totient is φ = 650434752.

The previous prime is 978020143. The next prime is 978020171. The reversal of 978020163 is 361020879.

It is not a de Polignac number, because 978020163 - 2²⁰ = 976971587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (978020143) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19531 + ... + 48347.

It is an arithmetic number, because the mean of its divisors is an integer number (73226538).

Almost surely, 2^978020163 is an apocalyptic number.

978020163 is a deficient number, since it is larger than the sum of its proper divisors (486510597).

978020163 is a wasteful number, since it uses less digits than its factorization.

978020163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29248 (or 29239 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 978020163 is about 31273.3139113846. The cubic root of 978020163 is about 992.6190431776.

The spelling of 978020163 in words is "nine hundred seventy-eight million, twenty thousand, one hundred sixty-three".