216363379 has 2 divisors, whose sum is σ = 216363380. Its totient is φ = 216363378.

The previous prime is 216363373. The next prime is 216363391. The reversal of 216363379 is 973363612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 216363379 - 2¹¹ = 216361331 is a prime.

It is a super-2 number, since 2×216363379² = 93626223544595282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (216363373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108181689 + 108181690.

It is an arithmetic number, because the mean of its divisors is an integer number (108181690).

Almost surely, 2^216363379 is an apocalyptic number.

216363379 is a deficient number, since it is larger than the sum of its proper divisors (1).

216363379 is an equidigital number, since it uses as much as digits as its factorization.

216363379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 40.

The square root of 216363379 is about 14709.2956663465. The cubic root of 216363379 is about 600.3362735353.

The spelling of 216363379 in words is "two hundred sixteen million, three hundred sixty-three thousand, three hundred seventy-nine".