218769113 has 4 divisors (see below), whose sum is σ = 218941440. Its totient is φ = 218596788.

The previous prime is 218769043. The next prime is 218769143. The reversal of 218769113 is 311967812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 218769113 - 2⁸ = 218768857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218769143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84245 + ... + 86802.

It is an arithmetic number, because the mean of its divisors is an integer number (54735360).

Almost surely, 2^218769113 is an apocalyptic number.

It is an amenable number.

218769113 is a deficient number, since it is larger than the sum of its proper divisors (172327).

218769113 is a wasteful number, since it uses less digits than its factorization.

218769113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172326.

The product of its digits is 18144, while the sum is 38.

The square root of 218769113 is about 14790.8455809666. The cubic root of 218769113 is about 602.5531141229.

The spelling of 218769113 in words is "two hundred eighteen million, seven hundred sixty-nine thousand, one hundred thirteen".