135181544 has 8 divisors (see below), whose sum is σ = 253465410. Its totient is φ = 67590768.

The previous prime is 135181537. The next prime is 135181549. The reversal of 135181544 is 445181531.

135181544 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 76352644 + 58828900 = 8738^2 + 7670^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 135181544.

It is not an unprimeable number, because it can be changed into a prime (135181549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8448839 + ... + 8448854.

Almost surely, 2^135181544 is an apocalyptic number.

It is an amenable number.

135181544 is a deficient number, since it is larger than the sum of its proper divisors (118283866).

135181544 is a wasteful number, since it uses less digits than its factorization.

135181544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16897699 (or 16897695 counting only the distinct ones).

The product of its digits is 9600, while the sum is 32.

The square root of 135181544 is about 11626.7598237858. The cubic root of 135181544 is about 513.2226335009. Note that the first 3 decimals are identical.

The spelling of 135181544 in words is "one hundred thirty-five million, one hundred eighty-one thousand, five hundred forty-four".