135630293 has 2 divisors, whose sum is σ = 135630294. Its totient is φ = 135630292.

The previous prime is 135630247. The next prime is 135630307. The reversal of 135630293 is 392036531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78446449 + 57183844 = 8857^2 + 7562^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135630293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135630193) 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, 67815146 + 67815147.

It is an arithmetic number, because the mean of its divisors is an integer number (67815147).

Almost surely, 2^135630293 is an apocalyptic number.

It is an amenable number.

135630293 is a deficient number, since it is larger than the sum of its proper divisors (1).

135630293 is an equidigital number, since it uses as much as digits as its factorization.

135630293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 32.

The square root of 135630293 is about 11646.0419456569. The cubic root of 135630293 is about 513.7899046482.

The spelling of 135630293 in words is "one hundred thirty-five million, six hundred thirty thousand, two hundred ninety-three".