544135644 has 60 divisors (see below), whose sum is σ = 1531911304. Its totient is φ = 167425056.

The previous prime is 544135639. The next prime is 544135663. The reversal of 544135644 is 446531445.

544135644 is a `hidden beast` number, since 5 + 4 + 4 + 1 + 3 + 5 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 544135599 and 544135608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 60382 + ... + 68805.

Almost surely, 2^544135644 is an apocalyptic number.

544135644 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

544135644 is an abundant number, since it is smaller than the sum of its proper divisors (987775660).

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

544135644 is a wasteful number, since it uses less digits than its factorization.

544135644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129216 (or 129205 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 544135644 is about 23326.7152423996. The cubic root of 544135644 is about 816.3988642577.

The spelling of 544135644 in words is "five hundred forty-four million, one hundred thirty-five thousand, six hundred forty-four".