10819819 has 4 divisors (see below), whose sum is σ = 10941480. Its totient is φ = 10698160.

The previous prime is 10819793. The next prime is 10819843. The reversal of 10819819 is 91891801.

It is a happy number.

10819819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91891801 = 6449 ⋅14249.

It is a cyclic number.

It is not a de Polignac number, because 10819819 - 2⁷ = 10819691 is a prime.

It is a super-2 number, since 2×10819819² = 234136966385522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10819889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60697 + ... + 60874.

It is an arithmetic number, because the mean of its divisors is an integer number (2735370).

Almost surely, 2^10819819 is an apocalyptic number.

10819819 is a deficient number, since it is larger than the sum of its proper divisors (121661).

10819819 is an equidigital number, since it uses as much as digits as its factorization.

10819819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121660.

The product of its (nonzero) digits is 5184, while the sum is 37.

The square root of 10819819 is about 3289.3493277547. The cubic root of 10819819 is about 221.1770180728.

The spelling of 10819819 in words is "ten million, eight hundred nineteen thousand, eight hundred nineteen".