135649188 has 48 divisors (see below), whose sum is σ = 372375360. Its totient is φ = 42556032.

The previous prime is 135649187. The next prime is 135649229. The reversal of 135649188 is 881946531.

135649188 is a `hidden beast` number, since 1 + 3 + 564 + 9 + 1 + 88 = 666.

It is not an unprimeable number, because it can be changed into a prime (135649187) 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 15 ways as a sum of consecutive naturals, for example, 35106 + ... + 38777.

It is an arithmetic number, because the mean of its divisors is an integer number (7757820).

Almost surely, 2^135649188 is an apocalyptic number.

135649188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

135649188 is an abundant number, since it is smaller than the sum of its proper divisors (236726172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135649188 is a wasteful number, since it uses less digits than its factorization.

135649188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73913 (or 73905 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 135649188 is about 11646.8531372212. The cubic root of 135649188 is about 513.8137626651.

The spelling of 135649188 in words is "one hundred thirty-five million, six hundred forty-nine thousand, one hundred eighty-eight".