163472887 has 4 divisors (see below), whose sum is σ = 163498896. Its totient is φ = 163446880.

The previous prime is 163472879. The next prime is 163472917. The reversal of 163472887 is 788274361.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 788274361 = 7 ⋅112610623.

It is a cyclic number.

It is not a de Polignac number, because 163472887 - 2³ = 163472879 is a prime.

It is a super-3 number, since 3×163472887³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163472807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2943 + ... + 18319.

It is an arithmetic number, because the mean of its divisors is an integer number (40874724).

Almost surely, 2^163472887 is an apocalyptic number.

163472887 is a deficient number, since it is larger than the sum of its proper divisors (26009).

163472887 is a wasteful number, since it uses less digits than its factorization.

163472887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26008.

The product of its digits is 451584, while the sum is 46.

The square root of 163472887 is about 12785.6516063907. The cubic root of 163472887 is about 546.7833030343.

The spelling of 163472887 in words is "one hundred sixty-three million, four hundred seventy-two thousand, eight hundred eighty-seven".