136473769 has 2 divisors, whose sum is σ = 136473770. Its totient is φ = 136473768.

The previous prime is 136473761. The next prime is 136473791. The reversal of 136473769 is 967374631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73874025 + 62599744 = 8595^2 + 7912^2 .

It is an emirp because it is prime and its reverse (967374631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136473769 - 2³ = 136473761 is a prime.

It is a super-2 number, since 2×136473769² = 37250179250130722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136473761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68236884 + 68236885.

It is an arithmetic number, because the mean of its divisors is an integer number (68236885).

Almost surely, 2^136473769 is an apocalyptic number.

It is an amenable number.

136473769 is a deficient number, since it is larger than the sum of its proper divisors (1).

136473769 is an equidigital number, since it uses as much as digits as its factorization.

136473769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 46.

The square root of 136473769 is about 11682.1988084436. The cubic root of 136473769 is about 514.8527797369.

The spelling of 136473769 in words is "one hundred thirty-six million, four hundred seventy-three thousand, seven hundred sixty-nine".