218950469 has 2 divisors, whose sum is σ = 218950470. Its totient is φ = 218950468.

The previous prime is 218950447. The next prime is 218950481. The reversal of 218950469 is 964059812.

218950469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152201569 + 66748900 = 12337^2 + 8170^2 .

It is a cyclic number.

It is not a de Polignac number, because 218950469 - 2⁸ = 218950213 is a prime.

It is a super-2 number, since 2×218950469² = 95878615750639922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218950169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109475234 + 109475235.

It is an arithmetic number, because the mean of its divisors is an integer number (109475235).

Almost surely, 2^218950469 is an apocalyptic number.

It is an amenable number.

218950469 is a deficient number, since it is larger than the sum of its proper divisors (1).

218950469 is an equidigital number, since it uses as much as digits as its factorization.

218950469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 218950469 is about 14796.9749949103. The cubic root of 218950469 is about 602.7195703451.

The spelling of 218950469 in words is "two hundred eighteen million, nine hundred fifty thousand, four hundred sixty-nine".