166040539 has 8 divisors (see below), whose sum is σ = 192593408. Its totient is φ = 140195880.

The previous prime is 166040527. The next prime is 166040551. The reversal of 166040539 is 935040661.

It is an interprime number because it is at equal distance from previous prime (166040527) and next prime (166040551).

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

It is a cyclic number.

It is not a de Polignac number, because 166040539 - 2⁵ = 166040507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166040509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176547 + ... + 177484.

It is an arithmetic number, because the mean of its divisors is an integer number (24074176).

Almost surely, 2^166040539 is an apocalyptic number.

166040539 is a deficient number, since it is larger than the sum of its proper divisors (26552869).

166040539 is an equidigital number, since it uses as much as digits as its factorization.

166040539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354105.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 166040539 is about 12885.6718489957. The cubic root of 166040539 is about 549.6312006929.

The spelling of 166040539 in words is "one hundred sixty-six million, forty thousand, five hundred thirty-nine".