136869187 has 8 divisors (see below), whose sum is σ = 168454496. Its totient is φ = 108292032.

The previous prime is 136869169. The next prime is 136869197. The reversal of 136869187 is 781968631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136869187 - 2⁷ = 136869059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136869187.

It is not an unprimeable number, because it can be changed into a prime (136869107) 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 in 7 ways as a sum of consecutive naturals, for example, 751938 + ... + 752119.

It is an arithmetic number, because the mean of its divisors is an integer number (21056812).

Almost surely, 2^136869187 is an apocalyptic number.

136869187 is a deficient number, since it is larger than the sum of its proper divisors (31585309).

136869187 is a wasteful number, since it uses less digits than its factorization.

136869187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504077.

The product of its digits is 435456, while the sum is 49.

The square root of 136869187 is about 11699.1105217448. The cubic root of 136869187 is about 515.3495437056.

The spelling of 136869187 in words is "one hundred thirty-six million, eight hundred sixty-nine thousand, one hundred eighty-seven".