133986818 has 8 divisors (see below), whose sum is σ = 229691712. Its totient is φ = 57422916.

The previous prime is 133986793. The next prime is 133986857. The reversal of 133986818 is 818689331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 4785230 + ... + 4785257.

It is an arithmetic number, because the mean of its divisors is an integer number (28711464).

Almost surely, 2^133986818 is an apocalyptic number.

133986818 is a deficient number, since it is larger than the sum of its proper divisors (95704894).

133986818 is an equidigital number, since it uses as much as digits as its factorization.

133986818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9570496.

The product of its digits is 248832, while the sum is 47.

The square root of 133986818 is about 11575.2675131074. The cubic root of 133986818 is about 511.7062142093.

The spelling of 133986818 in words is "one hundred thirty-three million, nine hundred eighty-six thousand, eight hundred eighteen".