135671793 has 4 divisors (see below), whose sum is σ = 180895728. Its totient is φ = 90447860.

The previous prime is 135671759. The next prime is 135671807. The reversal of 135671793 is 397176531.

135671793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 397176531 = 3 ⋅132392177.

It is a cyclic number.

It is not a de Polignac number, because 135671793 - 2⁶ = 135671729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135671293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22611963 + ... + 22611968.

It is an arithmetic number, because the mean of its divisors is an integer number (45223932).

Almost surely, 2^135671793 is an apocalyptic number.

It is an amenable number.

135671793 is a deficient number, since it is larger than the sum of its proper divisors (45223935).

135671793 is an equidigital number, since it uses as much as digits as its factorization.

135671793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45223934.

The product of its digits is 119070, while the sum is 42.

The square root of 135671793 is about 11647.8235306000. The cubic root of 135671793 is about 513.8423022511.

The spelling of 135671793 in words is "one hundred thirty-five million, six hundred seventy-one thousand, seven hundred ninety-three".