133918003 has 4 divisors (see below), whose sum is σ = 133942248. Its totient is φ = 133893760.

The previous prime is 133917991. The next prime is 133918007. The reversal of 133918003 is 300819331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300819331 = 151 ⋅1992181.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133918003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133918007) 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, 648 + ... + 16378.

It is an arithmetic number, because the mean of its divisors is an integer number (33485562).

Almost surely, 2^133918003 is an apocalyptic number.

133918003 is a deficient number, since it is larger than the sum of its proper divisors (24245).

133918003 is an equidigital number, since it uses as much as digits as its factorization.

133918003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24244.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 133918003 is about 11572.2946298476. The cubic root of 133918003 is about 511.6185959053.

The spelling of 133918003 in words is "one hundred thirty-three million, nine hundred eighteen thousand, three".