166084539 has 4 divisors (see below), whose sum is σ = 221446056. Its totient is φ = 110723024.

The previous prime is 166084531. The next prime is 166084559. The reversal of 166084539 is 935480661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166084539 - 2³ = 166084531 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166084539.

It is not an unprimeable number, because it can be changed into a prime (166084531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27680754 + ... + 27680759.

It is an arithmetic number, because the mean of its divisors is an integer number (55361514).

Almost surely, 2^166084539 is an apocalyptic number.

166084539 is a deficient number, since it is larger than the sum of its proper divisors (55361517).

166084539 is an equidigital number, since it uses as much as digits as its factorization.

166084539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55361516.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 166084539 is about 12887.3790585984. The cubic root of 166084539 is about 549.6797463415.

The spelling of 166084539 in words is "one hundred sixty-six million, eighty-four thousand, five hundred thirty-nine".