5188991390 has 32 divisors (see below), whose sum is σ = 10725575040. Its totient is φ = 1787594400.

The previous prime is 5188991377. The next prime is 5188991471. The reversal of 5188991390 is 931998815.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1239296 + ... + 1243475.

It is an arithmetic number, because the mean of its divisors is an integer number (335174220).

Almost surely, 2^5188991390 is an apocalyptic number.

5188991390 is an abundant number, since it is smaller than the sum of its proper divisors (5536583650).

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

5188991390 is a wasteful number, since it uses less digits than its factorization.

5188991390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482808.

The product of its (nonzero) digits is 699840, while the sum is 53.

The square root of 5188991390 is about 72034.6540909304. The cubic root of 5188991390 is about 1731.2547714726.

The spelling of 5188991390 in words is "five billion, one hundred eighty-eight million, nine hundred ninety-one thousand, three hundred ninety".