5245638944 has 192 divisors, whose sum is σ = 13138272000. Its totient is φ = 2048385024.

The previous prime is 5245638943. The next prime is 5245638953. The reversal of 5245638944 is 4498365425.

It is a junction number, because it is equal to n+sod(n) for n = 5245638892 and 5245638901.

It is not an unprimeable number, because it can be changed into a prime (5245638943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13840547 + ... + 13840925.

It is an arithmetic number, because the mean of its divisors is an integer number (68428500).

Almost surely, 2^5245638944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5245638944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6569136000).

5245638944 is an abundant number, since it is smaller than the sum of its proper divisors (7892633056).

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

5245638944 is a wasteful number, since it uses less digits than its factorization.

5245638944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 498 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 50.

The square root of 5245638944 is about 72426.7833332394. The cubic root of 5245638944 is about 1737.5319463719.

The spelling of 5245638944 in words is "five billion, two hundred forty-five million, six hundred thirty-eight thousand, nine hundred forty-four".