10820819 has 2 divisors, whose sum is σ = 10820820. Its totient is φ = 10820818.

The previous prime is 10820809. The next prime is 10820881. The reversal of 10820819 is 91802801.

10820819 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 is an emirp because it is prime and its reverse (91802801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10820819 - 2¹² = 10816723 is a prime.

It is a super-2 number, since 2×10820819² = 234180247661522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10820791 and 10820800.

It is not a weakly prime, because it can be changed into another prime (10820809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5410409 + 5410410.

It is an arithmetic number, because the mean of its divisors is an integer number (5410410).

Almost surely, 2^10820819 is an apocalyptic number.

10820819 is a deficient number, since it is larger than the sum of its proper divisors (1).

10820819 is an equidigital number, since it uses as much as digits as its factorization.

10820819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 10820819 is about 3289.5013299891. The cubic root of 10820819 is about 221.1838318099.

The spelling of 10820819 in words is "ten million, eight hundred twenty thousand, eight hundred nineteen".