135743893 has 2 divisors, whose sum is σ = 135743894. Its totient is φ = 135743892.

The previous prime is 135743887. The next prime is 135743897. The reversal of 135743893 is 398347531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82410084 + 53333809 = 9078^2 + 7303^2 .

It is an emirp because it is prime and its reverse (398347531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135743893 - 2⁹ = 135743381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135743897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67871946 + 67871947.

It is an arithmetic number, because the mean of its divisors is an integer number (67871947).

Almost surely, 2^135743893 is an apocalyptic number.

It is an amenable number.

135743893 is a deficient number, since it is larger than the sum of its proper divisors (1).

135743893 is an equidigital number, since it uses as much as digits as its factorization.

135743893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 43.

The square root of 135743893 is about 11650.9181183287. The cubic root of 135743893 is about 513.9333097929.

It can be divided in two parts, 1357438 and 93, that added together give a palindrome (1357531).

The spelling of 135743893 in words is "one hundred thirty-five million, seven hundred forty-three thousand, eight hundred ninety-three".