135537844 has 12 divisors (see below), whose sum is σ = 255436804. Its totient is φ = 62555904.

The previous prime is 135537769. The next prime is 135537847. The reversal of 135537844 is 448735531.

It can be written as a sum of positive squares in 2 ways, for example, as 41447844 + 94090000 = 6438^2 + 9700^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 135537797 and 135537806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135537847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1303197 + ... + 1303300.

Almost surely, 2^135537844 is an apocalyptic number.

It is an amenable number.

135537844 is a deficient number, since it is larger than the sum of its proper divisors (119898960).

135537844 is a wasteful number, since it uses less digits than its factorization.

135537844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606514 (or 2606512 counting only the distinct ones).

The product of its digits is 201600, while the sum is 40.

The square root of 135537844 is about 11642.0721523275. The cubic root of 135537844 is about 513.6731407646.

The spelling of 135537844 in words is "one hundred thirty-five million, five hundred thirty-seven thousand, eight hundred forty-four".