133918705 has 4 divisors (see below), whose sum is σ = 160702452. Its totient is φ = 107134960.

The previous prime is 133918661. The next prime is 133918717. The reversal of 133918705 is 507819331.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 79852096 + 54066609 = 8936^2 + 7353^2 .

It is not a de Polignac number, because 133918705 - 2¹⁵ = 133885937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13391866 + ... + 13391875.

It is an arithmetic number, because the mean of its divisors is an integer number (40175613).

Almost surely, 2^133918705 is an apocalyptic number.

It is an amenable number.

133918705 is a deficient number, since it is larger than the sum of its proper divisors (26783747).

133918705 is an equidigital number, since it uses as much as digits as its factorization.

133918705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26783746.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 133918705 is about 11572.3249608711. The cubic root of 133918705 is about 511.6194898743.

The spelling of 133918705 in words is "one hundred thirty-three million, nine hundred eighteen thousand, seven hundred five".