2135361509 has 2 divisors, whose sum is σ = 2135361510. Its totient is φ = 2135361508.

The previous prime is 2135361479. The next prime is 2135361523. The reversal of 2135361509 is 9051635312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1387339009 + 748022500 = 37247^2 + 27350^2 .

It is a cyclic number.

It is not a de Polignac number, because 2135361509 - 2²⁸ = 1866926053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2135361539) 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, 1067680754 + 1067680755.

It is an arithmetic number, because the mean of its divisors is an integer number (1067680755).

Almost surely, 2^2135361509 is an apocalyptic number.

It is an amenable number.

2135361509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135361509 is an equidigital number, since it uses as much as digits as its factorization.

2135361509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 2135361509 is about 46209.9719649341. The cubic root of 2135361509 is about 1287.7270048598.

The spelling of 2135361509 in words is "two billion, one hundred thirty-five million, three hundred sixty-one thousand, five hundred nine".