218032151 has 4 divisors (see below), whose sum is σ = 220149072. Its totient is φ = 215915232.

The previous prime is 218032103. The next prime is 218032169. The reversal of 218032151 is 151230812.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218032151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218032181) 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 3 ways as a sum of consecutive naturals, for example, 1058306 + ... + 1058511.

It is an arithmetic number, because the mean of its divisors is an integer number (55037268).

Almost surely, 2^218032151 is an apocalyptic number.

218032151 is a deficient number, since it is larger than the sum of its proper divisors (2116921).

218032151 is a wasteful number, since it uses less digits than its factorization.

218032151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2116920.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 218032151 is about 14765.9117903366. The cubic root of 218032151 is about 601.8757511150.

Adding to 218032151 its reverse (151230812), we get a palindrome (369262963).

The spelling of 218032151 in words is "two hundred eighteen million, thirty-two thousand, one hundred fifty-one".