166343158 has 4 divisors (see below), whose sum is σ = 249514740. Its totient is φ = 83171578.

The previous prime is 166343137. The next prime is 166343161. The reversal of 166343158 is 851343661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 851343661 = 7 ⋅121620523.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41585788 + ... + 41585791.

It is an arithmetic number, because the mean of its divisors is an integer number (62378685).

Almost surely, 2^166343158 is an apocalyptic number.

166343158 is a deficient number, since it is larger than the sum of its proper divisors (83171582).

166343158 is an equidigital number, since it uses as much as digits as its factorization.

166343158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83171581.

The product of its digits is 51840, while the sum is 37.

The square root of 166343158 is about 12897.4089645944. The cubic root of 166343158 is about 549.9649101580.

The spelling of 166343158 in words is "one hundred sixty-six million, three hundred forty-three thousand, one hundred fifty-eight".