135187185 has 32 divisors (see below), whose sum is σ = 260213760. Its totient is φ = 58546368.

The previous prime is 135187139. The next prime is 135187193. The reversal of 135187185 is 581781531.

It is a happy number.

It is not a de Polignac number, because 135187185 - 2⁹ = 135186673 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 31887 + ... + 35876.

It is an arithmetic number, because the mean of its divisors is an integer number (8131680).

Almost surely, 2^135187185 is an apocalyptic number.

135187185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135187185 is a deficient number, since it is larger than the sum of its proper divisors (125026575).

135187185 is a wasteful number, since it uses less digits than its factorization.

135187185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67797.

The product of its digits is 33600, while the sum is 39.

The square root of 135187185 is about 11627.0024081876. The cubic root of 135187185 is about 513.2297721692.

The spelling of 135187185 in words is "one hundred thirty-five million, one hundred eighty-seven thousand, one hundred eighty-five".