2347891109 has 2 divisors, whose sum is σ = 2347891110. Its totient is φ = 2347891108.

The previous prime is 2347891093. The next prime is 2347891153. The reversal of 2347891109 is 9011987432.

It is an a-pointer prime, because the next prime (2347891153) can be obtained adding 2347891109 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1195084900 + 1152806209 = 34570^2 + 33953^2 .

It is a cyclic number.

It is not a de Polignac number, because 2347891109 - 2⁴ = 2347891093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2347891109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2347891409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1173945554 + 1173945555.

It is an arithmetic number, because the mean of its divisors is an integer number (1173945555).

Almost surely, 2^2347891109 is an apocalyptic number.

It is an amenable number.

2347891109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2347891109 is an equidigital number, since it uses as much as digits as its factorization.

2347891109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 2347891109 is about 48455.0421421755. The cubic root of 2347891109 is about 1329.1050773889.

The spelling of 2347891109 in words is "two billion, three hundred forty-seven million, eight hundred ninety-one thousand, one hundred nine".