5638626144 has 36 divisors (see below), whose sum is σ = 16034843916. Its totient is φ = 1879541952.

The previous prime is 5638626043. The next prime is 5638626197. The reversal of 5638626144 is 4416268365.

5638626144 is a `hidden beast` number, since 5 + 6 + 3 + 8 + 626 + 14 + 4 = 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 5638626144.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9788994 + ... + 9789569.

It is an arithmetic number, because the mean of its divisors is an integer number (445412331).

Almost surely, 2^5638626144 is an apocalyptic number.

It is an amenable number.

5638626144 is an abundant number, since it is smaller than the sum of its proper divisors (10396217772).

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

5638626144 is a wasteful number, since it uses less digits than its factorization.

5638626144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19578579 (or 19578568 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 5638626144 is about 75090.7860126660. The cubic root of 5638626144 is about 1779.8815457932.

The spelling of 5638626144 in words is "five billion, six hundred thirty-eight million, six hundred twenty-six thousand, one hundred forty-four".