163936887 has 8 divisors (see below), whose sum is σ = 220836336. Its totient is φ = 108164352.

The previous prime is 163936859. The next prime is 163936891. The reversal of 163936887 is 788639361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 163936887 - 2¹⁸ = 163674743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163936187) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 281388 + ... + 281969.

It is an arithmetic number, because the mean of its divisors is an integer number (27604542).

Almost surely, 2^163936887 is an apocalyptic number.

163936887 is a deficient number, since it is larger than the sum of its proper divisors (56899449).

163936887 is an equidigital number, since it uses as much as digits as its factorization.

163936887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563457.

The product of its digits is 1306368, while the sum is 51.

The square root of 163936887 is about 12803.7840890887. The cubic root of 163936887 is about 547.3001426455.

The spelling of 163936887 in words is "one hundred sixty-three million, nine hundred thirty-six thousand, eight hundred eighty-seven".