133086818 has 4 divisors (see below), whose sum is σ = 199630230. Its totient is φ = 66543408.

The previous prime is 133086803. The next prime is 133086827. The reversal of 133086818 is 818680331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 133010089 + 76729 = 11533^2 + 277^2 .

It is a super-2 number, since 2×133086818² = 35424202250730248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33271703 + ... + 33271706.

Almost surely, 2^133086818 is an apocalyptic number.

133086818 is a deficient number, since it is larger than the sum of its proper divisors (66543412).

133086818 is an equidigital number, since it uses as much as digits as its factorization.

133086818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66543411.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 133086818 is about 11536.3260182781. The cubic root of 133086818 is about 510.5579156522.

The spelling of 133086818 in words is "one hundred thirty-three million, eighty-six thousand, eight hundred eighteen".