136919347 has 4 divisors (see below), whose sum is σ = 137100976. Its totient is φ = 136737720.

The previous prime is 136919333. The next prime is 136919357. The reversal of 136919347 is 743919631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136919347 - 2¹¹ = 136917299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136919357) 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, 89679 + ... + 91192.

It is an arithmetic number, because the mean of its divisors is an integer number (34275244).

Almost surely, 2^136919347 is an apocalyptic number.

136919347 is a deficient number, since it is larger than the sum of its proper divisors (181629).

136919347 is an equidigital number, since it uses as much as digits as its factorization.

136919347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181628.

The product of its digits is 122472, while the sum is 43.

The square root of 136919347 is about 11701.2540780892. The cubic root of 136919347 is about 515.4124913431.

The spelling of 136919347 in words is "one hundred thirty-six million, nine hundred nineteen thousand, three hundred forty-seven".