166288371 has 16 divisors (see below), whose sum is σ = 229447680. Its totient is φ = 107012160.

The previous prime is 166288351. The next prime is 166288391. The reversal of 166288371 is 173882661.

It is an interprime number because it is at equal distance from previous prime (166288351) and next prime (166288391).

It is not a de Polignac number, because 166288371 - 2⁶ = 166288307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166288301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38791 + ... + 42863.

It is an arithmetic number, because the mean of its divisors is an integer number (14340480).

Almost surely, 2^166288371 is an apocalyptic number.

166288371 is a deficient number, since it is larger than the sum of its proper divisors (63159309).

166288371 is a wasteful number, since it uses less digits than its factorization.

166288371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546.

The product of its digits is 96768, while the sum is 42.

The square root of 166288371 is about 12895.2848359391. The cubic root of 166288371 is about 549.9045244740.

The spelling of 166288371 in words is "one hundred sixty-six million, two hundred eighty-eight thousand, three hundred seventy-one".