5865621538 has 48 divisors (see below), whose sum is σ = 10604210688. Its totient is φ = 2423736000.

The previous prime is 5865621491. The next prime is 5865621589. The reversal of 5865621538 is 8351265685.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 5865621491 and 5865621500.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 850243 + ... + 857113.

It is an arithmetic number, because the mean of its divisors is an integer number (220921056).

Almost surely, 2^5865621538 is an apocalyptic number.

5865621538 is a deficient number, since it is larger than the sum of its proper divisors (4738589150).

5865621538 is a wasteful number, since it uses less digits than its factorization.

5865621538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7199 (or 7192 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 49.

The square root of 5865621538 is about 76587.3458085603. The cubic root of 5865621538 is about 1803.4523801068.

The spelling of 5865621538 in words is "five billion, eight hundred sixty-five million, six hundred twenty-one thousand, five hundred thirty-eight".