43819048909 has 2 divisors, whose sum is σ = 43819048910. Its totient is φ = 43819048908.

The previous prime is 43819048859. The next prime is 43819048957. The reversal of 43819048909 is 90984091834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43819048900 + 9 = 209330^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 43819048909 - 2¹³ = 43819040717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43819048909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43819048969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21909524454 + 21909524455.

It is an arithmetic number, because the mean of its divisors is an integer number (21909524455).

Almost surely, 2^43819048909 is an apocalyptic number.

It is an amenable number.

43819048909 is a deficient number, since it is larger than the sum of its proper divisors (1).

43819048909 is an equidigital number, since it uses as much as digits as its factorization.

43819048909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 43819048909 in words is "forty-three billion, eight hundred nineteen million, forty-eight thousand, nine hundred nine".