135185837 has 2 divisors, whose sum is σ = 135185838. Its totient is φ = 135185836.

The previous prime is 135185807. The next prime is 135185857. The reversal of 135185837 is 738581531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88755241 + 46430596 = 9421^2 + 6814^2 .

It is a cyclic number.

It is not a de Polignac number, because 135185837 - 2¹⁴ = 135169453 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 135185794 and 135185803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135185807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67592918 + 67592919.

It is an arithmetic number, because the mean of its divisors is an integer number (67592919).

Almost surely, 2^135185837 is an apocalyptic number.

It is an amenable number.

135185837 is a deficient number, since it is larger than the sum of its proper divisors (1).

135185837 is an equidigital number, since it uses as much as digits as its factorization.

135185837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 41.

The square root of 135185837 is about 11626.9444395335. The cubic root of 135185837 is about 513.2280662974.

The spelling of 135185837 in words is "one hundred thirty-five million, one hundred eighty-five thousand, eight hundred thirty-seven".