166486437 has 12 divisors (see below), whose sum is σ = 258979084. Its totient is φ = 102453120.

The previous prime is 166486433. The next prime is 166486447. The reversal of 166486437 is 734684661.

It is a happy number.

166486437 is a `hidden beast` number, since 166 + 486 + 4 + 3 + 7 = 666.

166486437 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 32251041 + 134235396 = 5679^2 + 11586^2 .

It is not a de Polignac number, because 166486437 - 2² = 166486433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166486392 and 166486401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166486433) 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, 711364 + ... + 711597.

Almost surely, 2^166486437 is an apocalyptic number.

It is an amenable number.

166486437 is a deficient number, since it is larger than the sum of its proper divisors (92492647).

166486437 is a wasteful number, since it uses less digits than its factorization.

166486437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422980 (or 1422977 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 166486437 is about 12902.9623342859. The cubic root of 166486437 is about 550.1227681866.

The spelling of 166486437 in words is "one hundred sixty-six million, four hundred eighty-six thousand, four hundred thirty-seven".