216903419 has 2 divisors, whose sum is σ = 216903420. Its totient is φ = 216903418.

The previous prime is 216903397. The next prime is 216903439. The reversal of 216903419 is 914309612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216903419 - 2⁸ = 216903163 is a prime.

It is a super-2 number, since 2×216903419² = 94094186347779122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (216903439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108451709 + 108451710.

It is an arithmetic number, because the mean of its divisors is an integer number (108451710).

Almost surely, 2^216903419 is an apocalyptic number.

216903419 is a deficient number, since it is larger than the sum of its proper divisors (1).

216903419 is an equidigital number, since it uses as much as digits as its factorization.

216903419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 216903419 is about 14727.6413250731. The cubic root of 216903419 is about 600.8353355585.

The spelling of 216903419 in words is "two hundred sixteen million, nine hundred three thousand, four hundred nineteen".