136771493 has 2 divisors, whose sum is σ = 136771494. Its totient is φ = 136771492.

The previous prime is 136771483. The next prime is 136771529. The reversal of 136771493 is 394177631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135326689 + 1444804 = 11633^2 + 1202^2 .

It is an emirp because it is prime and its reverse (394177631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136771493 - 2¹⁸ = 136509349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136771493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136771403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68385746 + 68385747.

It is an arithmetic number, because the mean of its divisors is an integer number (68385747).

Almost surely, 2^136771493 is an apocalyptic number.

It is an amenable number.

136771493 is a deficient number, since it is larger than the sum of its proper divisors (1).

136771493 is an equidigital number, since it uses as much as digits as its factorization.

136771493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 41.

The square root of 136771493 is about 11694.9345017405. The cubic root of 136771493 is about 515.2268997346.

The spelling of 136771493 in words is "one hundred thirty-six million, seven hundred seventy-one thousand, four hundred ninety-three".