2288761309 has 2 divisors, whose sum is σ = 2288761310. Its totient is φ = 2288761308.

The previous prime is 2288761259. The next prime is 2288761373. The reversal of 2288761309 is 9031678822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1896602500 + 392158809 = 43550^2 + 19803^2 .

It is a cyclic number.

It is not a de Polignac number, because 2288761309 - 2²⁷ = 2154543581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2288761379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1144380654 + 1144380655.

It is an arithmetic number, because the mean of its divisors is an integer number (1144380655).

Almost surely, 2^2288761309 is an apocalyptic number.

It is an amenable number.

2288761309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2288761309 is an equidigital number, since it uses as much as digits as its factorization.

2288761309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 2288761309 is about 47841.0002926360. Note that the first 3 decimals coincide. The cubic root of 2288761309 is about 1317.8525898907.

The spelling of 2288761309 in words is "two billion, two hundred eighty-eight million, seven hundred sixty-one thousand, three hundred nine".