133918001 has 8 divisors (see below), whose sum is σ = 153290880. Its totient is φ = 114605568.

The previous prime is 133917991. The next prime is 133918007. The reversal of 133918001 is 100819331.

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

It is a de Polignac number, because none of the positive numbers 2^k-133918001 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10256 + ... + 19313.

It is an arithmetic number, because the mean of its divisors is an integer number (19161360).

Almost surely, 2^133918001 is an apocalyptic number.

It is an amenable number.

133918001 is a deficient number, since it is larger than the sum of its proper divisors (19372879).

133918001 is an equidigital number, since it uses as much as digits as its factorization.

133918001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30223.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 133918001 is about 11572.2945434343. The cubic root of 133918001 is about 511.6185933583.

The spelling of 133918001 in words is "one hundred thirty-three million, nine hundred eighteen thousand, one".