133818332 has 12 divisors (see below), whose sum is σ = 234485160. Its totient is φ = 66822576.

The previous prime is 133818331. The next prime is 133818343. The reversal of 133818332 is 233818331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133818331) 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, 18107 + ... + 24402.

It is an arithmetic number, because the mean of its divisors is an integer number (19540430).

Almost surely, 2^133818332 is an apocalyptic number.

It is an amenable number.

133818332 is a deficient number, since it is larger than the sum of its proper divisors (100666828).

133818332 is a wasteful number, since it uses less digits than its factorization.

133818332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43300 (or 43298 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 133818332 is about 11567.9873789696. The cubic root of 133818332 is about 511.4916371391.

Subtracting 133818332 from its reverse (233818331), we obtain a palindrome (99999999).

The spelling of 133818332 in words is "one hundred thirty-three million, eight hundred eighteen thousand, three hundred thirty-two".