218984153 has 2 divisors, whose sum is σ = 218984154. Its totient is φ = 218984152.

The previous prime is 218984147. The next prime is 218984179. The reversal of 218984153 is 351489812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218684944 + 299209 = 14788^2 + 547^2 .

It is a cyclic number.

It is not a de Polignac number, because 218984153 - 2⁴ = 218984137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 218984153.

It is not a weakly prime, because it can be changed into another prime (218984053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109492076 + 109492077.

It is an arithmetic number, because the mean of its divisors is an integer number (109492077).

Almost surely, 2^218984153 is an apocalyptic number.

It is an amenable number.

218984153 is a deficient number, since it is larger than the sum of its proper divisors (1).

218984153 is an equidigital number, since it uses as much as digits as its factorization.

218984153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 41.

The square root of 218984153 is about 14798.1131567508. The cubic root of 218984153 is about 602.7504768253.

The spelling of 218984153 in words is "two hundred eighteen million, nine hundred eighty-four thousand, one hundred fifty-three".