135186471 has 48 divisors (see below), whose sum is σ = 230630400. Its totient is φ = 74701440.

The previous prime is 135186449. The next prime is 135186481. The reversal of 135186471 is 174681531.

135186471 is a `hidden beast` number, since 1 + 3 + 5 + 1 + 8 + 647 + 1 = 666.

It is not a de Polignac number, because 135186471 - 2⁶ = 135186407 is a prime.

It is a super-3 number, since 3×135186471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135186421) 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 47 ways as a sum of consecutive naturals, for example, 513886 + ... + 514148.

It is an arithmetic number, because the mean of its divisors is an integer number (4804800).

Almost surely, 2^135186471 is an apocalyptic number.

135186471 is a deficient number, since it is larger than the sum of its proper divisors (95443929).

135186471 is a wasteful number, since it uses less digits than its factorization.

135186471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 513 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 135186471 is about 11626.9717037585. The cubic root of 135186471 is about 513.2288686153.

The spelling of 135186471 in words is "one hundred thirty-five million, one hundred eighty-six thousand, four hundred seventy-one".