166343081 has 8 divisors (see below), whose sum is σ = 175867200. Its totient is φ = 156895920.

The previous prime is 166343063. The next prime is 166343087. The reversal of 166343081 is 180343661.

166343081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 166343081 - 2⁶ = 166343017 is a prime.

It is a super-2 number, since 2×166343081² = 55340041193145122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166343087) 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, 14765 + ... + 23466.

It is an arithmetic number, because the mean of its divisors is an integer number (21983400).

Almost surely, 2^166343081 is an apocalyptic number.

It is an amenable number.

166343081 is a deficient number, since it is larger than the sum of its proper divisors (9524119).

166343081 is a wasteful number, since it uses less digits than its factorization.

166343081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38479.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 166343081 is about 12897.4059794984. The cubic root of 166343081 is about 549.9648252987.

It can be divided in two parts, 1663 and 43081, that added together give a palindrome (44744).

The spelling of 166343081 in words is "one hundred sixty-six million, three hundred forty-three thousand, eighty-one".