136790491 has 2 divisors, whose sum is σ = 136790492. Its totient is φ = 136790490.

The previous prime is 136790471. The next prime is 136790501. The reversal of 136790491 is 194097631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136790491 - 2⁷ = 136790363 is a prime.

It is not a weakly prime, because it can be changed into another prime (136790431) 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, 68395245 + 68395246.

It is an arithmetic number, because the mean of its divisors is an integer number (68395246).

Almost surely, 2^136790491 is an apocalyptic number.

136790491 is a deficient number, since it is larger than the sum of its proper divisors (1).

136790491 is an equidigital number, since it uses as much as digits as its factorization.

136790491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 136790491 is about 11695.7467055336. The cubic root of 136790491 is about 515.2507541876.

The spelling of 136790491 in words is "one hundred thirty-six million, seven hundred ninety thousand, four hundred ninety-one".