136916961 has 4 divisors (see below), whose sum is σ = 182555952. Its totient is φ = 91277972.

The previous prime is 136916957. The next prime is 136916981. The reversal of 136916961 is 169619631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136916961 - 2² = 136916957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136916911) 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 in 3 ways as a sum of consecutive naturals, for example, 22819491 + ... + 22819496.

It is an arithmetic number, because the mean of its divisors is an integer number (45638988).

Almost surely, 2^136916961 is an apocalyptic number.

It is an amenable number.

136916961 is a deficient number, since it is larger than the sum of its proper divisors (45638991).

136916961 is an equidigital number, since it uses as much as digits as its factorization.

136916961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45638990.

The product of its digits is 52488, while the sum is 42.

The square root of 136916961 is about 11701.1521227612. The cubic root of 136916961 is about 515.4094974118.

The spelling of 136916961 in words is "one hundred thirty-six million, nine hundred sixteen thousand, nine hundred sixty-one".