136819 has 6 divisors (see below), whose sum is σ = 144780. Its totient is φ = 129276.

The previous prime is 136813. The next prime is 136841. The reversal of 136819 is 918631.

It is a happy number.

136819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 136819 - 2³ = 136811 is a prime.

It is a super-2 number, since 2×136819² = 37438877522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172 + ... + 550.

It is an arithmetic number, because the mean of its divisors is an integer number (24130).

2¹³⁶⁸¹⁹ is an apocalyptic number.

136819 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

136819 is a deficient number, since it is larger than the sum of its proper divisors (7961).

136819 is an equidigital number, since it uses as much as digits as its factorization.

136819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 398 counting only the distinct ones).

The product of its digits is 1296, while the sum is 28.

The square root of 136819 is about 369.8905243447. The cubic root of 136819 is about 51.5286546791.

The spelling of 136819 in words is "one hundred thirty-six thousand, eight hundred nineteen".