163978782 has 16 divisors (see below), whose sum is σ = 357772032. Its totient is φ = 49690520.

The previous prime is 163978751. The next prime is 163978819. The reversal of 163978782 is 287879361.

163978782 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1242198 + ... + 1242329.

It is an arithmetic number, because the mean of its divisors is an integer number (22360752).

Almost surely, 2^163978782 is an apocalyptic number.

163978782 is an abundant number, since it is smaller than the sum of its proper divisors (193793250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163978782 is a wasteful number, since it uses less digits than its factorization.

163978782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484543.

The product of its digits is 1016064, while the sum is 51.

The square root of 163978782 is about 12805.4200243491. The cubic root of 163978782 is about 547.3467605584.

The spelling of 163978782 in words is "one hundred sixty-three million, nine hundred seventy-eight thousand, seven hundred eighty-two".