133157185 has 8 divisors (see below), whose sum is σ = 182615616. Its totient is φ = 91307760.

The previous prime is 133157179. The next prime is 133157203. The reversal of 133157185 is 581751331.

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

It is not a de Polignac number, because 133157185 - 2⁵ = 133157153 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133157185.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1902211 + ... + 1902280.

It is an arithmetic number, because the mean of its divisors is an integer number (22826952).

Almost surely, 2^133157185 is an apocalyptic number.

It is an amenable number.

133157185 is a deficient number, since it is larger than the sum of its proper divisors (49458431).

133157185 is an equidigital number, since it uses as much as digits as its factorization.

133157185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3804503.

The product of its digits is 12600, while the sum is 34.

The square root of 133157185 is about 11539.3754163733. The cubic root of 133157185 is about 510.6478822356.

It can be divided in two parts, 1331571 and 85, that multiplied together give a triangular number (113183535 = T₁₅₀₄₅).

The spelling of 133157185 in words is "one hundred thirty-three million, one hundred fifty-seven thousand, one hundred eighty-five".