216141469 has 2 divisors, whose sum is σ = 216141470. Its totient is φ = 216141468.

The previous prime is 216141461. The next prime is 216141479. The reversal of 216141469 is 964141612.

It is a happy number.

216141469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191490244 + 24651225 = 13838^2 + 4965^2 .

It is a cyclic number.

It is not a de Polignac number, because 216141469 - 2³ = 216141461 is a prime.

It is a super-2 number, since 2×216141469² = 93434269242955922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216141461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108070734 + 108070735.

It is an arithmetic number, because the mean of its divisors is an integer number (108070735).

Almost surely, 2^216141469 is an apocalyptic number.

It is an amenable number.

216141469 is a deficient number, since it is larger than the sum of its proper divisors (1).

216141469 is an equidigital number, since it uses as much as digits as its factorization.

216141469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 216141469 is about 14701.7505420273. The cubic root of 216141469 is about 600.1309612280.

The spelling of 216141469 in words is "two hundred sixteen million, one hundred forty-one thousand, four hundred sixty-nine".