166111836 has 24 divisors (see below), whose sum is σ = 422830464. Its totient is φ = 50336880.

The previous prime is 166111823. The next prime is 166111843. The reversal of 166111836 is 638111661.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 166111797 and 166111806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629080 + ... + 629343.

It is an arithmetic number, because the mean of its divisors is an integer number (17617936).

Almost surely, 2^166111836 is an apocalyptic number.

It is an amenable number.

166111836 is an abundant number, since it is smaller than the sum of its proper divisors (256718628).

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

166111836 is a wasteful number, since it uses less digits than its factorization.

166111836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258441 (or 1258439 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 166111836 is about 12888.4380744914. The cubic root of 166111836 is about 549.7098590904.

The spelling of 166111836 in words is "one hundred sixty-six million, one hundred eleven thousand, eight hundred thirty-six".