136393193 has 8 divisors (see below), whose sum is σ = 144883368. Its totient is φ = 127954944.

The previous prime is 136393181. The next prime is 136393217. The reversal of 136393193 is 391393631.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1763584 + 134629609 = 1328^2 + 11603^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136393193 - 2⁶ = 136393129 is a prime.

It is a super-4 number, since 4×136393193⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136393393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7496 + ... + 18137.

It is an arithmetic number, because the mean of its divisors is an integer number (18110421).

Almost surely, 2^136393193 is an apocalyptic number.

It is an amenable number.

136393193 is a deficient number, since it is larger than the sum of its proper divisors (8490175).

136393193 is a wasteful number, since it uses less digits than its factorization.

136393193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25963.

The product of its digits is 39366, while the sum is 38.

The square root of 136393193 is about 11678.7496334154. The cubic root of 136393193 is about 514.7514343893.

The spelling of 136393193 in words is "one hundred thirty-six million, three hundred ninety-three thousand, one hundred ninety-three".