136819823 has 8 divisors (see below), whose sum is σ = 157177248. Its totient is φ = 116665344.

The previous prime is 136819819. The next prime is 136819831. The reversal of 136819823 is 328918631.

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 136819823 - 2² = 136819819 is a prime.

It is a super-3 number, since 3×136819823³ (a number of 25 digits) contains 333 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 (136819853) 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, 49286 + ... + 51987.

It is an arithmetic number, because the mean of its divisors is an integer number (19647156).

Almost surely, 2^136819823 is an apocalyptic number.

136819823 is a deficient number, since it is larger than the sum of its proper divisors (20357425).

136819823 is a wasteful number, since it uses less digits than its factorization.

136819823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101473.

The product of its digits is 62208, while the sum is 41.

The square root of 136819823 is about 11697.0005984440. Note that the first 3 decimals coincide. The cubic root of 136819823 is about 515.2875799808.

The spelling of 136819823 in words is "one hundred thirty-six million, eight hundred nineteen thousand, eight hundred twenty-three".