166811044 has 6 divisors (see below), whose sum is σ = 291919334. Its totient is φ = 83405520.

The previous prime is 166811041. The next prime is 166811119. The reversal of 166811044 is 440118661.

166811044 is digitally balanced in base 2, 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., 156000100 + 10810944 = 12490^2 + 3288^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166810997 and 166811015.

It is not an unprimeable number, because it can be changed into a prime (166811041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20851377 + ... + 20851384.

Almost surely, 2^166811044 is an apocalyptic number.

It is an amenable number.

166811044 is a deficient number, since it is larger than the sum of its proper divisors (125108290).

166811044 is a wasteful number, since it uses less digits than its factorization.

166811044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41702765 (or 41702763 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 166811044 is about 12915.5349869837. The cubic root of 166811044 is about 550.4800701028.

The spelling of 166811044 in words is "one hundred sixty-six million, eight hundred eleven thousand, forty-four".