166532749 has 4 divisors (see below), whose sum is σ = 166560064. Its totient is φ = 166505436.

The previous prime is 166532669. The next prime is 166532771. The reversal of 166532749 is 947235661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166532749 - 2⁷ = 166532621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166535749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124 + ... + 18250.

It is an arithmetic number, because the mean of its divisors is an integer number (41640016).

Almost surely, 2^166532749 is an apocalyptic number.

It is an amenable number.

166532749 is a deficient number, since it is larger than the sum of its proper divisors (27315).

166532749 is an equidigital number, since it uses as much as digits as its factorization.

166532749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27314.

The product of its digits is 272160, while the sum is 43.

The square root of 166532749 is about 12904.7568361438. The cubic root of 166532749 is about 550.1737731895.

It can be divided in two parts, 166532 and 749, that added together give a square (167281 = 409²).

The spelling of 166532749 in words is "one hundred sixty-six million, five hundred thirty-two thousand, seven hundred forty-nine".