166118371 has 2 divisors, whose sum is σ = 166118372. Its totient is φ = 166118370.

The previous prime is 166118363. The next prime is 166118389. The reversal of 166118371 is 173811661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166118371 - 2³ = 166118363 is a prime.

It is not a weakly prime, because it can be changed into another prime (166118321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83059185 + 83059186.

It is an arithmetic number, because the mean of its divisors is an integer number (83059186).

Almost surely, 2^166118371 is an apocalyptic number.

166118371 is a deficient number, since it is larger than the sum of its proper divisors (1).

166118371 is an equidigital number, since it uses as much as digits as its factorization.

166118371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 34.

The square root of 166118371 is about 12888.6915937965. The cubic root of 166118371 is about 549.7170677014.

The spelling of 166118371 in words is "one hundred sixty-six million, one hundred eighteen thousand, three hundred seventy-one".