133450618 has 12 divisors (see below), whose sum is σ = 232857882. Its totient is φ = 57193080.

The previous prime is 133450607. The next prime is 133450619. The reversal of 133450618 is 816054331.

It can be written as a sum of positive squares in only one way, i.e., 114554209 + 18896409 = 10703^2 + 4347^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133450618.

It is not an unprimeable number, because it can be changed into a prime (133450619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 680773 + ... + 680968.

Almost surely, 2^133450618 is an apocalyptic number.

133450618 is a deficient number, since it is larger than the sum of its proper divisors (99407264).

133450618 is a wasteful number, since it uses less digits than its factorization.

133450618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361757 (or 1361750 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 133450618 is about 11552.0828425007. The cubic root of 133450618 is about 511.0227049397.

The spelling of 133450618 in words is "one hundred thirty-three million, four hundred fifty thousand, six hundred eighteen".