109543913 has 2 divisors, whose sum is σ = 109543914. Its totient is φ = 109543912.

The previous prime is 109543909. The next prime is 109543921. The reversal of 109543913 is 319345901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55771024 + 53772889 = 7468^2 + 7333^2 .

It is a cyclic number.

It is not a de Polignac number, because 109543913 - 2² = 109543909 is a prime.

It is not a weakly prime, because it can be changed into another prime (109548913) 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, 54771956 + 54771957.

It is an arithmetic number, because the mean of its divisors is an integer number (54771957).

Almost surely, 2^109543913 is an apocalyptic number.

It is an amenable number.

109543913 is a deficient number, since it is larger than the sum of its proper divisors (1).

109543913 is an equidigital number, since it uses as much as digits as its factorization.

109543913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 109543913 is about 10466.3228022071. The cubic root of 109543913 is about 478.4788549323.

The spelling of 109543913 in words is "one hundred nine million, five hundred forty-three thousand, nine hundred thirteen".