136639319 has 8 divisors (see below), whose sum is σ = 144789120. Its totient is φ = 128502016.

The previous prime is 136639313. The next prime is 136639333. The reversal of 136639319 is 913936631.

It is a happy number.

136639319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 136639319 - 2⁴ = 136639303 is a prime.

It is a super-2 number, since 2×136639319² = 37340606993567522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136639313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28787 + ... + 33195.

It is an arithmetic number, because the mean of its divisors is an integer number (18098640).

Almost surely, 2^136639319 is an apocalyptic number.

136639319 is a deficient number, since it is larger than the sum of its proper divisors (8149801).

136639319 is a wasteful number, since it uses less digits than its factorization.

136639319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6249.

The product of its digits is 78732, while the sum is 41.

The square root of 136639319 is about 11689.2822277503. The cubic root of 136639319 is about 515.0608769586.

The spelling of 136639319 in words is "one hundred thirty-six million, six hundred thirty-nine thousand, three hundred nineteen".