218934071 has 2 divisors, whose sum is σ = 218934072. Its totient is φ = 218934070.

The previous prime is 218934061. The next prime is 218934119. The reversal of 218934071 is 170439812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218934071 - 2¹⁰ = 218933047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218934061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109467035 + 109467036.

It is an arithmetic number, because the mean of its divisors is an integer number (109467036).

Almost surely, 2^218934071 is an apocalyptic number.

218934071 is a deficient number, since it is larger than the sum of its proper divisors (1).

218934071 is an equidigital number, since it uses as much as digits as its factorization.

218934071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 218934071 is about 14796.4208847951. The cubic root of 218934071 is about 602.7045233464.

The spelling of 218934071 in words is "two hundred eighteen million, nine hundred thirty-four thousand, seventy-one".