133690818 has 16 divisors (see below), whose sum is σ = 267553440. Its totient is φ = 44534976.

The previous prime is 133690793. The next prime is 133690849. The reversal of 133690818 is 818096331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4393 + ... + 16931.

It is an arithmetic number, because the mean of its divisors is an integer number (16722090).

Almost surely, 2^133690818 is an apocalyptic number.

133690818 is an abundant number, since it is smaller than the sum of its proper divisors (133862622).

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

133690818 is a wasteful number, since it uses less digits than its factorization.

133690818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14321.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 133690818 is about 11562.4745621342. The cubic root of 133690818 is about 511.3291206110.

The spelling of 133690818 in words is "one hundred thirty-three million, six hundred ninety thousand, eight hundred eighteen".