218034379 has 2 divisors, whose sum is σ = 218034380. Its totient is φ = 218034378.

The previous prime is 218034373. The next prime is 218034389. The reversal of 218034379 is 973430812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218034379 - 2³ = 218034371 is a prime.

It is not a weakly prime, because it can be changed into another prime (218034371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109017189 + 109017190.

It is an arithmetic number, because the mean of its divisors is an integer number (109017190).

Almost surely, 2^218034379 is an apocalyptic number.

218034379 is a deficient number, since it is larger than the sum of its proper divisors (1).

218034379 is an equidigital number, since it uses as much as digits as its factorization.

218034379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 218034379 is about 14765.9872341811. The cubic root of 218034379 is about 601.8778012326.

The spelling of 218034379 in words is "two hundred eighteen million, thirty-four thousand, three hundred seventy-nine".