136381477 has 2 divisors, whose sum is σ = 136381478. Its totient is φ = 136381476.

The previous prime is 136381439. The next prime is 136381499. The reversal of 136381477 is 774183631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135699201 + 682276 = 11649^2 + 826^2 .

It is a cyclic number.

It is not a de Polignac number, because 136381477 - 2¹¹ = 136379429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136381417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68190738 + 68190739.

It is an arithmetic number, because the mean of its divisors is an integer number (68190739).

Almost surely, 2^136381477 is an apocalyptic number.

It is an amenable number.

136381477 is a deficient number, since it is larger than the sum of its proper divisors (1).

136381477 is an equidigital number, since it uses as much as digits as its factorization.

136381477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 40.

The square root of 136381477 is about 11678.2480278508. The cubic root of 136381477 is about 514.7366951384.

The spelling of 136381477 in words is "one hundred thirty-six million, three hundred eighty-one thousand, four hundred seventy-seven".