133918079 has 4 divisors (see below), whose sum is σ = 133978776. Its totient is φ = 133857384.

The previous prime is 133918073. The next prime is 133918091. The reversal of 133918079 is 970819331.

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

It is a cyclic number.

It is not a de Polignac number, because 133918079 - 2⁴ = 133918063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133918073) 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, 26909 + ... + 31494.

It is an arithmetic number, because the mean of its divisors is an integer number (33494694).

Almost surely, 2^133918079 is an apocalyptic number.

133918079 is a deficient number, since it is larger than the sum of its proper divisors (60697).

133918079 is an equidigital number, since it uses as much as digits as its factorization.

133918079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60696.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 133918079 is about 11572.2979135520. The cubic root of 133918079 is about 511.6186926884.

The spelling of 133918079 in words is "one hundred thirty-three million, nine hundred eighteen thousand, seventy-nine".