11745109 has 2 divisors, whose sum is σ = 11745110. Its totient is φ = 11745108.

The previous prime is 11745091. The next prime is 11745119. The reversal of 11745109 is 90154711.

Together with previous prime (11745091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11492100 + 253009 = 3390^2 + 503^2 .

It is an emirp because it is prime and its reverse (90154711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11745109 - 2⁷ = 11744981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11745119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5872554 + 5872555.

It is an arithmetic number, because the mean of its divisors is an integer number (5872555).

Almost surely, 2^11745109 is an apocalyptic number.

It is an amenable number.

11745109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11745109 is an equidigital number, since it uses as much as digits as its factorization.

11745109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 11745109 is about 3427.1138002698. The cubic root of 11745109 is about 227.3102487336.

The spelling of 11745109 in words is "eleven million, seven hundred forty-five thousand, one hundred nine".