163345878 has 12 divisors (see below), whose sum is σ = 353916108. Its totient is φ = 54448620.

The previous prime is 163345867. The next prime is 163345891. The reversal of 163345878 is 878543361.

163345878 is a `hidden beast` number, since 1 + 63 + 3 + 4 + 587 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 4537368 + ... + 4537403.

It is an arithmetic number, because the mean of its divisors is an integer number (29493009).

Almost surely, 2^163345878 is an apocalyptic number.

163345878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

163345878 is an abundant number, since it is smaller than the sum of its proper divisors (190570230).

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

163345878 is a wasteful number, since it uses less digits than its factorization.

163345878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9074779 (or 9074776 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 163345878 is about 12780.6837845242. The cubic root of 163345878 is about 546.6416599871.

The spelling of 163345878 in words is "one hundred sixty-three million, three hundred forty-five thousand, eight hundred seventy-eight".