133910857 has 8 divisors (see below), whose sum is σ = 135031040. Its totient is φ = 132794640.

The previous prime is 133910851. The next prime is 133910867. The reversal of 133910857 is 758019331.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 133910857 - 2¹⁵ = 133878089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133910851) 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, 134632 + ... + 135622.

It is an arithmetic number, because the mean of its divisors is an integer number (16878880).

Almost surely, 2^133910857 is an apocalyptic number.

It is an amenable number.

133910857 is a deficient number, since it is larger than the sum of its proper divisors (1120183).

133910857 is an equidigital number, since it uses as much as digits as its factorization.

133910857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983.

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

The square root of 133910857 is about 11571.9858710595. The cubic root of 133910857 is about 511.6094955816.

The spelling of 133910857 in words is "one hundred thirty-three million, nine hundred ten thousand, eight hundred fifty-seven".