11643109 has 2 divisors, whose sum is σ = 11643110. Its totient is φ = 11643108.

The previous prime is 11643103. The next prime is 11643133. The reversal of 11643109 is 90134611.

11643109 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7452900 + 4190209 = 2730^2 + 2047^2 .

It is a cyclic number.

It is not a de Polignac number, because 11643109 - 2¹⁷ = 11512037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11643103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5821554 + 5821555.

It is an arithmetic number, because the mean of its divisors is an integer number (5821555).

Almost surely, 2^11643109 is an apocalyptic number.

It is an amenable number.

11643109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11643109 is an equidigital number, since it uses as much as digits as its factorization.

11643109 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 25.

The square root of 11643109 is about 3412.2000234453. The cubic root of 11643109 is about 226.6503119207.

The spelling of 11643109 in words is "eleven million, six hundred forty-three thousand, one hundred nine".