133918008 has 32 divisors (see below), whose sum is σ = 382623360. Its totient is φ = 38262240.

The previous prime is 133918007. The next prime is 133918019. The reversal of 133918008 is 800819331.

It is a self number, because there is not a number n which added to its sum of digits gives 133918008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133918007) 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, 398398 + ... + 398733.

It is an arithmetic number, because the mean of its divisors is an integer number (11956980).

Almost surely, 2^133918008 is an apocalyptic number.

It is an amenable number.

133918008 is an abundant number, since it is smaller than the sum of its proper divisors (248705352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133918008 is a wasteful number, since it uses less digits than its factorization.

133918008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797147 (or 797143 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 133918008 is about 11572.2948458808. The cubic root of 133918008 is about 511.6186022726.

The spelling of 133918008 in words is "one hundred thirty-three million, nine hundred eighteen thousand, eight".