136228019 has 4 divisors (see below), whose sum is σ = 136254744. Its totient is φ = 136201296.

The previous prime is 136228009. The next prime is 136228033. The reversal of 136228019 is 910822631.

136228019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910822631 = 19979 ⋅45589.

It is a cyclic number.

It is not a de Polignac number, because 136228019 - 2²⁴ = 119450803 is a prime.

It is a super-2 number, since 2×136228019² = 37116146321328722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136228009) 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, 3077 + ... + 16790.

It is an arithmetic number, because the mean of its divisors is an integer number (34063686).

Almost surely, 2^136228019 is an apocalyptic number.

136228019 is a deficient number, since it is larger than the sum of its proper divisors (26725).

136228019 is an equidigital number, since it uses as much as digits as its factorization.

136228019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26724.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 136228019 is about 11671.6759293599. The cubic root of 136228019 is about 514.5435601394.

The spelling of 136228019 in words is "one hundred thirty-six million, two hundred twenty-eight thousand, nineteen".