135188447 has 2 divisors, whose sum is σ = 135188448. Its totient is φ = 135188446.

The previous prime is 135188441. The next prime is 135188453. The reversal of 135188447 is 744881531.

It is a balanced prime because it is at equal distance from previous prime (135188441) and next prime (135188453).

It is a cyclic number.

It is not a de Polignac number, because 135188447 - 2⁸ = 135188191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135188441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67594223 + 67594224.

It is an arithmetic number, because the mean of its divisors is an integer number (67594224).

Almost surely, 2^135188447 is an apocalyptic number.

135188447 is a deficient number, since it is larger than the sum of its proper divisors (1).

135188447 is an equidigital number, since it uses as much as digits as its factorization.

135188447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 41.

The square root of 135188447 is about 11627.0566782828. The cubic root of 135188447 is about 513.2313691992.

It can be divided in two parts, 1351 and 88447, that added together give a palindrome (89798).

The spelling of 135188447 in words is "one hundred thirty-five million, one hundred eighty-eight thousand, four hundred forty-seven".