168132403 has 4 divisors (see below), whose sum is σ = 172676560. Its totient is φ = 163588248.

The previous prime is 168132389. The next prime is 168132407. The reversal of 168132403 is 304231861.

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

It is not a de Polignac number, because 168132403 - 2¹³ = 168124211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168132407) 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, 2272023 + ... + 2272096.

It is an arithmetic number, because the mean of its divisors is an integer number (43169140).

Almost surely, 2^168132403 is an apocalyptic number.

168132403 is a deficient number, since it is larger than the sum of its proper divisors (4544157).

168132403 is an equidigital number, since it uses as much as digits as its factorization.

168132403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4544156.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 168132403 is about 12966.5879474903. The cubic root of 168132403 is about 551.9297534971.

The spelling of 168132403 in words is "one hundred sixty-eight million, one hundred thirty-two thousand, four hundred three".