166111444 has 12 divisors (see below), whose sum is σ = 291388468. Its totient is φ = 82857600.

The previous prime is 166111441. The next prime is 166111457. The reversal of 166111444 is 444111661.

166111444 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 2 ways, for example, as 35283600 + 130827844 = 5940^2 + 11438^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166111441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47637 + ... + 51004.

Almost surely, 2^166111444 is an apocalyptic number.

It is an amenable number.

166111444 is a deficient number, since it is larger than the sum of its proper divisors (125277024).

166111444 is a wasteful number, since it uses less digits than its factorization.

166111444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99066 (or 99064 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 166111444 is about 12888.4228670540. The cubic root of 166111444 is about 549.7094266780.

The spelling of 166111444 in words is "one hundred sixty-six million, one hundred eleven thousand, four hundred forty-four".