181218063 has 8 divisors (see below), whose sum is σ = 260210608. Its totient is φ = 111518784.

The previous prime is 181218001. The next prime is 181218101. The reversal of 181218063 is 360812181.

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

It is not a de Polignac number, because 181218063 - 2⁶ = 181217999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 181218063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181213063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2323270 + ... + 2323347.

It is an arithmetic number, because the mean of its divisors is an integer number (32526326).

Almost surely, 2^181218063 is an apocalyptic number.

181218063 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

181218063 is a deficient number, since it is larger than the sum of its proper divisors (78992545).

181218063 is a wasteful number, since it uses less digits than its factorization.

181218063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4646633.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 181218063 is about 13461.7258551792. The cubic root of 181218063 is about 565.8923565516.

The spelling of 181218063 in words is "one hundred eighty-one million, two hundred eighteen thousand, sixty-three".