166143837 has 16 divisors (see below), whose sum is σ = 224334720. Its totient is φ = 109367232.

The previous prime is 166143829. The next prime is 166143863. The reversal of 166143837 is 738341661.

It is not a de Polignac number, because 166143837 - 2³ = 166143829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166143795 and 166143804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166143827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80464 + ... + 82502.

It is an arithmetic number, because the mean of its divisors is an integer number (14020920).

Almost surely, 2^166143837 is an apocalyptic number.

It is an amenable number.

166143837 is a deficient number, since it is larger than the sum of its proper divisors (58190883).

166143837 is a wasteful number, since it uses less digits than its factorization.

166143837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372.

The product of its digits is 72576, while the sum is 39.

The square root of 166143837 is about 12889.6794762321. The cubic root of 166143837 is about 549.7451568675.

The spelling of 166143837 in words is "one hundred sixty-six million, one hundred forty-three thousand, eight hundred thirty-seven".