136948769 has 2 divisors, whose sum is σ = 136948770. Its totient is φ = 136948768.

The previous prime is 136948717. The next prime is 136948781. The reversal of 136948769 is 967849631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94867600 + 42081169 = 9740^2 + 6487^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136948769 is a prime.

It is a super-2 number, since 2×136948769² = 37509930661230722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 136948769.

It is not a weakly prime, because it can be changed into another prime (136978769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68474384 + 68474385.

It is an arithmetic number, because the mean of its divisors is an integer number (68474385).

Almost surely, 2^136948769 is an apocalyptic number.

It is an amenable number.

136948769 is a deficient number, since it is larger than the sum of its proper divisors (1).

136948769 is an equidigital number, since it uses as much as digits as its factorization.

136948769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 53.

The square root of 136948769 is about 11702.5112262283. The cubic root of 136948769 is about 515.4494069448.

The spelling of 136948769 in words is "one hundred thirty-six million, nine hundred forty-eight thousand, seven hundred sixty-nine".