133518380 has 12 divisors (see below), whose sum is σ = 280388640. Its totient is φ = 53407344.

The previous prime is 133518379. The next prime is 133518401. The reversal of 133518380 is 83815331.

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, 3337940 + ... + 3337979.

It is an arithmetic number, because the mean of its divisors is an integer number (23365720).

Almost surely, 2^133518380 is an apocalyptic number.

133518380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133518380 is an abundant number, since it is smaller than the sum of its proper divisors (146870260).

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

133518380 is a wasteful number, since it uses less digits than its factorization.

133518380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6675928 (or 6675926 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 133518380 is about 11555.0153613052. The cubic root of 133518380 is about 511.1091840227.

The spelling of 133518380 in words is "one hundred thirty-three million, five hundred eighteen thousand, three hundred eighty".