168132789 has 12 divisors (see below), whose sum is σ = 264936672. Its totient is φ = 101898600.

The previous prime is 168132779. The next prime is 168132791. The reversal of 168132789 is 987231861.

It is not a de Polignac number, because 168132789 - 2²¹ = 166035637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168132779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 849057 + ... + 849254.

It is an arithmetic number, because the mean of its divisors is an integer number (22078056).

Almost surely, 2^168132789 is an apocalyptic number.

It is an amenable number.

168132789 is a deficient number, since it is larger than the sum of its proper divisors (96803883).

168132789 is a wasteful number, since it uses less digits than its factorization.

168132789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698328 (or 1698325 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 168132789 is about 12966.6028318909. The cubic root of 168132789 is about 551.9301758720.

It can be divided in two parts, 168132 and 789, that added together give a square (168921 = 411²).

The spelling of 168132789 in words is "one hundred sixty-eight million, one hundred thirty-two thousand, seven hundred eighty-nine".