133895590 has 16 divisors (see below), whose sum is σ = 242458272. Its totient is φ = 53236864.

The previous prime is 133895569. The next prime is 133895591. The reversal of 133895590 is 95598331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133895591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38419 + ... + 41758.

It is an arithmetic number, because the mean of its divisors is an integer number (15153642).

Almost surely, 2^133895590 is an apocalyptic number.

133895590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133895590 is a deficient number, since it is larger than the sum of its proper divisors (108562682).

133895590 is a wasteful number, since it uses less digits than its factorization.

133895590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80351.

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 133895590 is about 11571.3261988417. The cubic root of 133895590 is about 511.5900522016.

The spelling of 133895590 in words is "one hundred thirty-three million, eight hundred ninety-five thousand, five hundred ninety".