10219813 has 2 divisors, whose sum is σ = 10219814. Its totient is φ = 10219812.

The previous prime is 10219787. The next prime is 10219819. The reversal of 10219813 is 31891201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6066369 + 4153444 = 2463^2 + 2038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10219813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10219819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5109906 + 5109907.

It is an arithmetic number, because the mean of its divisors is an integer number (5109907).

Almost surely, 2^10219813 is an apocalyptic number.

It is an amenable number.

10219813 is a deficient number, since it is larger than the sum of its proper divisors (1).

10219813 is an equidigital number, since it uses as much as digits as its factorization.

10219813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 10219813 is about 3196.8442251696. The cubic root of 10219813 is about 217.0106176716.

The spelling of 10219813 in words is "ten million, two hundred nineteen thousand, eight hundred thirteen".