10218449 has 2 divisors, whose sum is σ = 10218450. Its totient is φ = 10218448.

The previous prime is 10218433. The next prime is 10218487. The reversal of 10218449 is 94481201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8761600 + 1456849 = 2960^2 + 1207^2 .

It is a cyclic number.

It is not a de Polignac number, because 10218449 - 2⁴ = 10218433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10218149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5109224 + 5109225.

It is an arithmetic number, because the mean of its divisors is an integer number (5109225).

Almost surely, 2^10218449 is an apocalyptic number.

It is an amenable number.

10218449 is a deficient number, since it is larger than the sum of its proper divisors (1).

10218449 is an equidigital number, since it uses as much as digits as its factorization.

10218449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 10218449 is about 3196.6308826638. The cubic root of 10218449 is about 217.0009627117. Note that the first 3 decimals are identical.

The spelling of 10218449 in words is "ten million, two hundred eighteen thousand, four hundred forty-nine".