218032145 has 16 divisors (see below), whose sum is σ = 276367872. Its totient is φ = 164868480.

The previous prime is 218032103. The next prime is 218032169. The reversal of 218032145 is 541230812.

It is not a de Polignac number, because 218032145 - 2¹² = 218028049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9692 + ... + 23021.

It is an arithmetic number, because the mean of its divisors is an integer number (17272992).

Almost surely, 2^218032145 is an apocalyptic number.

It is an amenable number.

218032145 is a deficient number, since it is larger than the sum of its proper divisors (58335727).

218032145 is a wasteful number, since it uses less digits than its factorization.

218032145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32792.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 218032145 is about 14765.9115871659. The cubic root of 218032145 is about 601.8757455941.

Adding to 218032145 its reverse (541230812), we get a palindrome (759262957).

The spelling of 218032145 in words is "two hundred eighteen million, thirty-two thousand, one hundred forty-five".