136816449 has 32 divisors (see below), whose sum is σ = 229125120. Its totient is φ = 70545600.

The previous prime is 136816441. The next prime is 136816451. The reversal of 136816449 is 944618631.

It is not a de Polignac number, because 136816449 - 2³ = 136816441 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 136816449.

It is not an unprimeable number, because it can be changed into a prime (136816441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29979 + ... + 34239.

It is an arithmetic number, because the mean of its divisors is an integer number (7160160).

Almost surely, 2^136816449 is an apocalyptic number.

It is an amenable number.

136816449 is a deficient number, since it is larger than the sum of its proper divisors (92308671).

136816449 is a wasteful number, since it uses less digits than its factorization.

136816449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4421.

The product of its digits is 124416, while the sum is 42.

The square root of 136816449 is about 11696.8563725473. The cubic root of 136816449 is about 515.2833442530.

The spelling of 136816449 in words is "one hundred thirty-six million, eight hundred sixteen thousand, four hundred forty-nine".