5205838387 has 6 divisors (see below), whose sum is σ = 5327388572. Its totient is φ = 5084310252.

The previous prime is 5205838373. The next prime is 5205838397. The reversal of 5205838387 is 7838385025.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-5205838387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5205838387.

It is not an unprimeable number, because it can be changed into a prime (5205838307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 467628 + ... + 478630.

Almost surely, 2^5205838387 is an apocalyptic number.

5205838387 is a deficient number, since it is larger than the sum of its proper divisors (121550185).

5205838387 is an frugal number, since it uses more digits than its factorization.

5205838387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22049 (or 11046 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

The square root of 5205838387 is about 72151.4960828949. The cubic root of 5205838387 is about 1733.1263578019.

The spelling of 5205838387 in words is "five billion, two hundred five million, eight hundred thirty-eight thousand, three hundred eighty-seven".