133361885 has 4 divisors (see below), whose sum is σ = 160034268. Its totient is φ = 106689504.

The previous prime is 133361869. The next prime is 133361909. The reversal of 133361885 is 588163331.

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 19598329 + 113763556 = 4427^2 + 10666^2 .

It is a cyclic number.

It is not a de Polignac number, because 133361885 - 2⁴ = 133361869 is a prime.

It is a Duffinian number.

It is a congruent 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, 13336184 + ... + 13336193.

It is an arithmetic number, because the mean of its divisors is an integer number (40008567).

Almost surely, 2^133361885 is an apocalyptic number.

It is an amenable number.

133361885 is a deficient number, since it is larger than the sum of its proper divisors (26672383).

133361885 is an equidigital number, since it uses as much as digits as its factorization.

133361885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26672382.

The product of its digits is 51840, while the sum is 38.

The square root of 133361885 is about 11548.2416410465. The cubic root of 133361885 is about 510.9094180123.

The spelling of 133361885 in words is "one hundred thirty-three million, three hundred sixty-one thousand, eight hundred eighty-five".