133072618 has 32 divisors (see below), whose sum is σ = 250583040. Its totient is φ = 51678000.

The previous prime is 133072607. The next prime is 133072633. The reversal of 133072618 is 816270331.

It is a super-2 number, since 2×133072618² = 35416643322747848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133072618.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4758 + ... + 16993.

It is an arithmetic number, because the mean of its divisors is an integer number (7830720).

Almost surely, 2^133072618 is an apocalyptic number.

133072618 is a deficient number, since it is larger than the sum of its proper divisors (117510422).

133072618 is a wasteful number, since it uses less digits than its factorization.

133072618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21802.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 133072618 is about 11535.7105546212. The cubic root of 133072618 is about 510.5397566280.

The spelling of 133072618 in words is "one hundred thirty-three million, seventy-two thousand, six hundred eighteen".