166141967 has 4 divisors (see below), whose sum is σ = 166383096. Its totient is φ = 165900840.

The previous prime is 166141961. The next prime is 166141991. The reversal of 166141967 is 769141661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 769141661 = 83 ⋅9266767.

It is a cyclic number.

It is not a de Polignac number, because 166141967 - 2⁸ = 166141711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166141961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119528 + ... + 120909.

It is an arithmetic number, because the mean of its divisors is an integer number (41595774).

Almost surely, 2^166141967 is an apocalyptic number.

166141967 is a deficient number, since it is larger than the sum of its proper divisors (241129).

166141967 is an equidigital number, since it uses as much as digits as its factorization.

166141967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241128.

The product of its digits is 54432, while the sum is 41.

The square root of 166141967 is about 12889.6069373740. The cubic root of 166141967 is about 549.7430943428.

It can be divided in two parts, 16614 and 1967, that added together give a palindrome (18581).

The spelling of 166141967 in words is "one hundred sixty-six million, one hundred forty-one thousand, nine hundred sixty-seven".