136449658 has 4 divisors (see below), whose sum is σ = 204674490. Its totient is φ = 68224828.

The previous prime is 136449653. The next prime is 136449661. The reversal of 136449658 is 856944631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 856944631 = 19 ⋅45102349.

It can be written as a sum of positive squares in only one way, i.e., 121727089 + 14722569 = 11033^2 + 3837^2 .

It is not an unprimeable number, because it can be changed into a prime (136449653) 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, 34112413 + ... + 34112416.

Almost surely, 2^136449658 is an apocalyptic number.

136449658 is a deficient number, since it is larger than the sum of its proper divisors (68224832).

136449658 is an equidigital number, since it uses as much as digits as its factorization.

136449658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68224831.

The product of its digits is 622080, while the sum is 46.

The square root of 136449658 is about 11681.1668081575. The cubic root of 136449658 is about 514.8224580456.

The spelling of 136449658 in words is "one hundred thirty-six million, four hundred forty-nine thousand, six hundred fifty-eight".