136455919 has 2 divisors, whose sum is σ = 136455920. Its totient is φ = 136455918.

The previous prime is 136455881. The next prime is 136455931. The reversal of 136455919 is 919554631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136455919 - 2⁷ = 136455791 is a prime.

It is a super-2 number, since 2×136455919² = 37240435660269122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136455419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68227959 + 68227960.

It is an arithmetic number, because the mean of its divisors is an integer number (68227960).

Almost surely, 2^136455919 is an apocalyptic number.

136455919 is a deficient number, since it is larger than the sum of its proper divisors (1).

136455919 is an equidigital number, since it uses as much as digits as its factorization.

136455919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 43.

The square root of 136455919 is about 11681.4348005714. The cubic root of 136455919 is about 514.8303321440.

The spelling of 136455919 in words is "one hundred thirty-six million, four hundred fifty-five thousand, nine hundred nineteen".