136780149 has 16 divisors (see below), whose sum is σ = 207604224. Its totient is φ = 79292400.

The previous prime is 136780139. The next prime is 136780169. The reversal of 136780149 is 941087631.

It is not a de Polignac number, because 136780149 - 2¹¹ = 136778101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136780109) 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 15 ways as a sum of consecutive naturals, for example, 89347 + ... + 90864.

It is an arithmetic number, because the mean of its divisors is an integer number (12975264).

Almost surely, 2^136780149 is an apocalyptic number.

It is an amenable number.

136780149 is a deficient number, since it is larger than the sum of its proper divisors (70824075).

136780149 is a wasteful number, since it uses less digits than its factorization.

136780149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180248.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 136780149 is about 11695.3045706386. The cubic root of 136780149 is about 515.2377687392.

The spelling of 136780149 in words is "one hundred thirty-six million, seven hundred eighty thousand, one hundred forty-nine".