135907193 has 4 divisors (see below), whose sum is σ = 140291328. Its totient is φ = 131523060.

The previous prime is 135907181. The next prime is 135907199. The reversal of 135907193 is 391709531.

135907193 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: 391709531 = 41 ⋅9553891.

It is a cyclic number.

It is not a de Polignac number, because 135907193 - 2¹⁸ = 135645049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135907199) 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, 2192021 + ... + 2192082.

It is an arithmetic number, because the mean of its divisors is an integer number (35072832).

Almost surely, 2^135907193 is an apocalyptic number.

It is an amenable number.

135907193 is a deficient number, since it is larger than the sum of its proper divisors (4384135).

135907193 is an equidigital number, since it uses as much as digits as its factorization.

135907193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384134.

The product of its (nonzero) digits is 25515, while the sum is 38.

The square root of 135907193 is about 11657.9240433278. The cubic root of 135907193 is about 514.1393145863.

The spelling of 135907193 in words is "one hundred thirty-five million, nine hundred seven thousand, one hundred ninety-three".