2102536309 has 2 divisors, whose sum is σ = 2102536310. Its totient is φ = 2102536308.

The previous prime is 2102536253. The next prime is 2102536339. The reversal of 2102536309 is 9036352012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2069795025 + 32741284 = 45495^2 + 5722^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102536309 - 2⁹ = 2102535797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102536339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051268154 + 1051268155.

It is an arithmetic number, because the mean of its divisors is an integer number (1051268155).

Almost surely, 2^2102536309 is an apocalyptic number.

It is an amenable number.

2102536309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102536309 is an equidigital number, since it uses as much as digits as its factorization.

2102536309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 2102536309 is about 45853.4219987996. The cubic root of 2102536309 is about 1281.0945043132.

The spelling of 2102536309 in words is "two billion, one hundred two million, five hundred thirty-six thousand, three hundred nine".