168166836 has 18 divisors (see below), whose sum is σ = 425088482. Its totient is φ = 56055600.

The previous prime is 168166819. The next prime is 168166861. The reversal of 168166836 is 638661861.

168166836 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 137030436 + 31136400 = 11706^2 + 5580^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 168166791 and 168166800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2335615 + ... + 2335686.

Almost surely, 2^168166836 is an apocalyptic number.

It is an amenable number.

168166836 is an abundant number, since it is smaller than the sum of its proper divisors (256921646).

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

168166836 is a wasteful number, since it uses less digits than its factorization.

168166836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671311 (or 4671306 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 168166836 is about 12967.9156382204. The cubic root of 168166836 is about 551.9674287650.

The spelling of 168166836 in words is "one hundred sixty-eight million, one hundred sixty-six thousand, eight hundred thirty-six".