218137041 has 6 divisors (see below), whose sum is σ = 315086850. Its totient is φ = 145424688.

The previous prime is 218137033. The next prime is 218137057. The reversal of 218137041 is 140731812.

It can be written as a sum of positive squares in only one way, i.e., 186732225 + 31404816 = 13665^2 + 5604^2 .

It is not a de Polignac number, because 218137041 - 2³ = 218137033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 218136996 and 218137014.

It is not an unprimeable number, because it can be changed into a prime (218137021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12118716 + ... + 12118733.

It is an arithmetic number, because the mean of its divisors is an integer number (52514475).

Almost surely, 2^218137041 is an apocalyptic number.

It is an amenable number.

218137041 is a deficient number, since it is larger than the sum of its proper divisors (96949809).

218137041 is a wasteful number, since it uses less digits than its factorization.

218137041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24237455 (or 24237452 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 218137041 is about 14769.4631249751. The cubic root of 218137041 is about 601.9722516027.

Adding to 218137041 its reverse (140731812), we get a palindrome (358868853).

The spelling of 218137041 in words is "two hundred eighteen million, one hundred thirty-seven thousand, forty-one".