218057963 has 8 divisors (see below), whose sum is σ = 240923808. Its totient is φ = 196307584.

The previous prime is 218057947. The next prime is 218058011. The reversal of 218057963 is 369750812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 218057963 - 2⁴ = 218057947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 218057963.

It is not an unprimeable number, because it can be changed into a prime (218057363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278456 + ... + 279237.

It is an arithmetic number, because the mean of its divisors is an integer number (30115476).

Almost surely, 2^218057963 is an apocalyptic number.

218057963 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

218057963 is a deficient number, since it is larger than the sum of its proper divisors (22865845).

218057963 is a wasteful number, since it uses less digits than its factorization.

218057963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557733.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 218057963 is about 14766.7858046360. The cubic root of 218057963 is about 601.8995014408.

The spelling of 218057963 in words is "two hundred eighteen million, fifty-seven thousand, nine hundred sixty-three".