135491784 has 16 divisors (see below), whose sum is σ = 338729520. Its totient is φ = 45163920.

The previous prime is 135491749. The next prime is 135491791. The reversal of 135491784 is 487194531.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2822722 + ... + 2822769.

It is an arithmetic number, because the mean of its divisors is an integer number (21170595).

Almost surely, 2^135491784 is an apocalyptic number.

It is an amenable number.

135491784 is an abundant number, since it is smaller than the sum of its proper divisors (203237736).

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

135491784 is a wasteful number, since it uses less digits than its factorization.

135491784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5645500 (or 5645496 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 135491784 is about 11640.0938140549. The cubic root of 135491784 is about 513.6149467705.

The spelling of 135491784 in words is "one hundred thirty-five million, four hundred ninety-one thousand, seven hundred eighty-four".