166162371 has 4 divisors (see below), whose sum is σ = 221549832. Its totient is φ = 110774912.

The previous prime is 166162361. The next prime is 166162397. The reversal of 166162371 is 173261661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 173261661 = 3 ⋅57753887.

It is a cyclic number.

It is not a de Polignac number, because 166162371 - 2⁶ = 166162307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166162361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27693726 + ... + 27693731.

It is an arithmetic number, because the mean of its divisors is an integer number (55387458).

Almost surely, 2^166162371 is an apocalyptic number.

166162371 is a deficient number, since it is larger than the sum of its proper divisors (55387461).

166162371 is an equidigital number, since it uses as much as digits as its factorization.

166162371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55387460.

The product of its digits is 9072, while the sum is 33.

The square root of 166162371 is about 12890.3984034629. The cubic root of 166162371 is about 549.7655981873.

The spelling of 166162371 in words is "one hundred sixty-six million, one hundred sixty-two thousand, three hundred seventy-one".