166532403 has 8 divisors (see below), whose sum is σ = 229206016. Its totient is φ = 107440200.

The previous prime is 166532381. The next prime is 166532407. The reversal of 166532403 is 304235661.

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

It is not a de Polignac number, because 166532403 - 2⁵ = 166532371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166532407) 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, 895243 + ... + 895428.

It is an arithmetic number, because the mean of its divisors is an integer number (28650752).

Almost surely, 2^166532403 is an apocalyptic number.

166532403 is a deficient number, since it is larger than the sum of its proper divisors (62673613).

166532403 is a wasteful number, since it uses less digits than its factorization.

166532403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790705.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 166532403 is about 12904.7434302275. The cubic root of 166532403 is about 550.1733921629.

The spelling of 166532403 in words is "one hundred sixty-six million, five hundred thirty-two thousand, four hundred three".