136263961 has 2 divisors, whose sum is σ = 136263962. Its totient is φ = 136263960.

The previous prime is 136263913. The next prime is 136263979. The reversal of 136263961 is 169362631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120582361 + 15681600 = 10981^2 + 3960^2 .

It is an emirp because it is prime and its reverse (169362631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136263961 - 2¹⁹ = 135739673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136263961.

It is not a weakly prime, because it can be changed into another prime (136263161) 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, 68131980 + 68131981.

It is an arithmetic number, because the mean of its divisors is an integer number (68131981).

Almost surely, 2^136263961 is an apocalyptic number.

It is an amenable number.

136263961 is a deficient number, since it is larger than the sum of its proper divisors (1).

136263961 is an equidigital number, since it uses as much as digits as its factorization.

136263961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 37.

The square root of 136263961 is about 11673.2155381454. The cubic root of 136263961 is about 514.5888080469.

The spelling of 136263961 in words is "one hundred thirty-six million, two hundred sixty-three thousand, nine hundred sixty-one".