218645141 has 16 divisors (see below), whose sum is σ = 270392640. Its totient is φ = 173819520.

The previous prime is 218645113. The next prime is 218645159. The reversal of 218645141 is 141546812.

It is a cyclic number.

It is not a de Polignac number, because 218645141 - 2¹⁴ = 218628757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 218645098 and 218645107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218645101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37520 + ... + 42953.

It is an arithmetic number, because the mean of its divisors is an integer number (16899540).

Almost surely, 2^218645141 is an apocalyptic number.

It is an amenable number.

218645141 is a deficient number, since it is larger than the sum of its proper divisors (51747499).

218645141 is a wasteful number, since it uses less digits than its factorization.

218645141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80516.

The product of its digits is 7680, while the sum is 32.

The square root of 218645141 is about 14786.6541516328. The cubic root of 218645141 is about 602.4392744247.

The spelling of 218645141 in words is "two hundred eighteen million, six hundred forty-five thousand, one hundred forty-one".