135913187 has 8 divisors (see below), whose sum is σ = 142139904. Its totient is φ = 129712968.

The previous prime is 135913177. The next prime is 135913189. The reversal of 135913187 is 781319531.

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 135913187 - 2¹⁰ = 135912163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135913187.

It is not an unprimeable number, because it can be changed into a prime (135913189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4268 + ... + 17030.

It is an arithmetic number, because the mean of its divisors is an integer number (17767488).

Almost surely, 2^135913187 is an apocalyptic number.

135913187 is a deficient number, since it is larger than the sum of its proper divisors (6226717).

135913187 is a wasteful number, since it uses less digits than its factorization.

135913187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13249.

The product of its digits is 22680, while the sum is 38.

The square root of 135913187 is about 11658.1811188538. The cubic root of 135913187 is about 514.1468729445.

The spelling of 135913187 in words is "one hundred thirty-five million, nine hundred thirteen thousand, one hundred eighty-seven".