136519189 has 4 divisors (see below), whose sum is σ = 138247360. Its totient is φ = 134791020.

The previous prime is 136519139. The next prime is 136519241. The reversal of 136519189 is 981915631.

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: 981915631 = 17 ⋅57759743.

It is a cyclic number.

It is not a de Polignac number, because 136519189 - 2²¹ = 134422037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136519139) 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 3 ways as a sum of consecutive naturals, for example, 863967 + ... + 864124.

It is an arithmetic number, because the mean of its divisors is an integer number (34561840).

Almost surely, 2^136519189 is an apocalyptic number.

It is an amenable number.

136519189 is a deficient number, since it is larger than the sum of its proper divisors (1728171).

136519189 is an equidigital number, since it uses as much as digits as its factorization.

136519189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728170.

The product of its digits is 58320, while the sum is 43.

The square root of 136519189 is about 11684.1426300777. The cubic root of 136519189 is about 514.9098896604.

The spelling of 136519189 in words is "one hundred thirty-six million, five hundred nineteen thousand, one hundred eighty-nine".