166167743 has 16 divisors (see below), whose sum is σ = 193971456. Its totient is φ = 139413120.

The previous prime is 166167739. The next prime is 166167751. The reversal of 166167743 is 347761661.

It is not a de Polignac number, because 166167743 - 2² = 166167739 is a prime.

It is a super-2 number, since 2×166167743² = 55223437627428098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166167743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166167733) 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, 64388 + ... + 66918.

It is an arithmetic number, because the mean of its divisors is an integer number (12123216).

Almost surely, 2^166167743 is an apocalyptic number.

166167743 is a deficient number, since it is larger than the sum of its proper divisors (27803713).

166167743 is a wasteful number, since it uses less digits than its factorization.

166167743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734.

The product of its digits is 127008, while the sum is 41.

The square root of 166167743 is about 12890.6067739265. The cubic root of 166167743 is about 549.7715227315.

The spelling of 166167743 in words is "one hundred sixty-six million, one hundred sixty-seven thousand, seven hundred forty-three".