136810493 has 2 divisors, whose sum is σ = 136810494. Its totient is φ = 136810492.

The previous prime is 136810451. The next prime is 136810511. The reversal of 136810493 is 394018631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126742564 + 10067929 = 11258^2 + 3173^2 .

It is a cyclic number.

It is not a de Polignac number, because 136810493 - 2²² = 132616189 is a prime.

It is a super-2 number, since 2×136810493² = 37434221989806098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136819493) 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, 68405246 + 68405247.

It is an arithmetic number, because the mean of its divisors is an integer number (68405247).

Almost surely, 2^136810493 is an apocalyptic number.

It is an amenable number.

136810493 is a deficient number, since it is larger than the sum of its proper divisors (1).

136810493 is an equidigital number, since it uses as much as digits as its factorization.

136810493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 136810493 is about 11696.6017714548. The cubic root of 136810493 is about 515.2758669062.

The spelling of 136810493 in words is "one hundred thirty-six million, eight hundred ten thousand, four hundred ninety-three".