136279019 has 2 divisors, whose sum is σ = 136279020. Its totient is φ = 136279018.

The previous prime is 136279009. The next prime is 136279043. The reversal of 136279019 is 910972631.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136279019 - 2⁸ = 136278763 is a prime.

It is a super-2 number, since 2×136279019² = 37143942039204722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136279009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68139509 + 68139510.

It is an arithmetic number, because the mean of its divisors is an integer number (68139510).

Almost surely, 2^136279019 is an apocalyptic number.

136279019 is a deficient number, since it is larger than the sum of its proper divisors (1).

136279019 is an equidigital number, since it uses as much as digits as its factorization.

136279019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 136279019 is about 11673.8605011367. The cubic root of 136279019 is about 514.6077624176.

The spelling of 136279019 in words is "one hundred thirty-six million, two hundred seventy-nine thousand, nineteen".