166339331 has 8 divisors (see below), whose sum is σ = 172704720. Its totient is φ = 160015968.

The previous prime is 166339307. The next prime is 166339361. The reversal of 166339331 is 133933661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166339331 - 2⁶ = 166339267 is a prime.

It is a super-2 number, since 2×166339331² = 55337546075055122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166339291 and 166339300.

It is not an unprimeable number, because it can be changed into a prime (166339361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2321 + ... + 18386.

It is an arithmetic number, because the mean of its divisors is an integer number (21588090).

Almost surely, 2^166339331 is an apocalyptic number.

166339331 is a deficient number, since it is larger than the sum of its proper divisors (6365389).

166339331 is a wasteful number, since it uses less digits than its factorization.

166339331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21013.

The product of its digits is 26244, while the sum is 35.

The square root of 166339331 is about 12897.2606006082. The cubic root of 166339331 is about 549.9606925076.

The spelling of 166339331 in words is "one hundred sixty-six million, three hundred thirty-nine thousand, three hundred thirty-one".