136801811 has 4 divisors (see below), whose sum is σ = 138339000. Its totient is φ = 135264624.

The previous prime is 136801807. The next prime is 136801813. The reversal of 136801811 is 118108631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118108631 = 2099 ⋅56269.

It is a cyclic number.

It is not a de Polignac number, because 136801811 - 2² = 136801807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136801813) 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, 768461 + ... + 768638.

It is an arithmetic number, because the mean of its divisors is an integer number (34584750).

Almost surely, 2^136801811 is an apocalyptic number.

136801811 is a deficient number, since it is larger than the sum of its proper divisors (1537189).

136801811 is an equidigital number, since it uses as much as digits as its factorization.

136801811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537188.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 136801811 is about 11696.2306321310. The cubic root of 136801811 is about 515.2649668657.

The spelling of 136801811 in words is "one hundred thirty-six million, eight hundred one thousand, eight hundred eleven".