4542736644 has 36 divisors (see below), whose sum is σ = 11485144944. Its totient is φ = 1513966512.

The previous prime is 4542736571. The next prime is 4542736663. The reversal of 4542736644 is 4466372454.

4542736644 is a `hidden beast` number, since 4 + 542 + 7 + 3 + 66 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 4542736644.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 303259 + ... + 317885.

It is an arithmetic number, because the mean of its divisors is an integer number (319031804).

Almost surely, 2^4542736644 is an apocalyptic number.

It is an amenable number.

4542736644 is an abundant number, since it is smaller than the sum of its proper divisors (6942408300).

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

4542736644 is a wasteful number, since it uses less digits than its factorization.

4542736644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23264 (or 23259 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 45.

The square root of 4542736644 is about 67399.8267356823. The cubic root of 4542736644 is about 1656.1735841635.

The spelling of 4542736644 in words is "four billion, five hundred forty-two million, seven hundred thirty-six thousand, six hundred forty-four".