135147187 has 4 divisors (see below), whose sum is σ = 154453936. Its totient is φ = 115840440.

The previous prime is 135147179. The next prime is 135147251. The reversal of 135147187 is 781741531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135147187 - 2³ = 135147179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135147167) 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, 9653364 + ... + 9653377.

It is an arithmetic number, because the mean of its divisors is an integer number (38613484).

Almost surely, 2^135147187 is an apocalyptic number.

135147187 is a deficient number, since it is larger than the sum of its proper divisors (19306749).

135147187 is an equidigital number, since it uses as much as digits as its factorization.

135147187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19306748.

The product of its digits is 23520, while the sum is 37.

The square root of 135147187 is about 11625.2822331331. The cubic root of 135147187 is about 513.1791505334.

The spelling of 135147187 in words is "one hundred thirty-five million, one hundred forty-seven thousand, one hundred eighty-seven".