218948955 has 8 divisors (see below), whose sum is σ = 350318352. Its totient is φ = 116772768.

The previous prime is 218948923. The next prime is 218948957. The reversal of 218948955 is 559849812.

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

It is not a de Polignac number, because 218948955 - 2⁵ = 218948923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 218948898 and 218948907.

It is not an unprimeable number, because it can be changed into a prime (218948957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7298284 + ... + 7298313.

It is an arithmetic number, because the mean of its divisors is an integer number (43789794).

Almost surely, 2^218948955 is an apocalyptic number.

218948955 is a deficient number, since it is larger than the sum of its proper divisors (131369397).

218948955 is a wasteful number, since it uses less digits than its factorization.

218948955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14596605.

The product of its digits is 1036800, while the sum is 51.

The square root of 218948955 is about 14796.9238357167. The cubic root of 218948955 is about 602.7181811123.

The spelling of 218948955 in words is "two hundred eighteen million, nine hundred forty-eight thousand, nine hundred fifty-five".