10819009 has 2 divisors, whose sum is σ = 10819010. Its totient is φ = 10819008.

The previous prime is 10818991. The next prime is 10819057. The reversal of 10819009 is 90091801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7579009 + 3240000 = 2753^2 + 1800^2 .

It is a cyclic number.

It is not a de Polignac number, because 10819009 - 2⁷ = 10818881 is a prime.

It is not a weakly prime, because it can be changed into another prime (10819079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5409504 + 5409505.

It is an arithmetic number, because the mean of its divisors is an integer number (5409505).

Almost surely, 2^10819009 is an apocalyptic number.

It is an amenable number.

10819009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10819009 is an equidigital number, since it uses as much as digits as its factorization.

10819009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 10819009 is about 3289.2262007956. The cubic root of 10819009 is about 221.1714986381.

The spelling of 10819009 in words is "ten million, eight hundred nineteen thousand, nine".