136316849 has 18 divisors (see below), whose sum is σ = 149332950. Its totient is φ = 124411392.

The previous prime is 136316839. The next prime is 136316861. The reversal of 136316849 is 948613631.

It can be written as a sum of positive squares in 3 ways, for example, as 28302400 + 108014449 = 5320^2 + 10393^2 .

It is not a de Polignac number, because 136316849 - 2¹² = 136312753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136316809) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 303377 + ... + 303825.

It is an arithmetic number, because the mean of its divisors is an integer number (8296275).

Almost surely, 2^136316849 is an apocalyptic number.

136316849 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

136316849 is a deficient number, since it is larger than the sum of its proper divisors (13016101).

136316849 is an equidigital number, since it uses as much as digits as its factorization.

136316849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545 (or 497 counting only the distinct ones).

The product of its digits is 93312, while the sum is 41.

The square root of 136316849 is about 11675.4806753298. The cubic root of 136316849 is about 514.6553750550.

The spelling of 136316849 in words is "one hundred thirty-six million, three hundred sixteen thousand, eight hundred forty-nine".