5388891805 has 8 divisors (see below), whose sum is σ = 7054549344. Its totient is φ = 3919194000.

The previous prime is 5388891793. The next prime is 5388891817. The reversal of 5388891805 is 5081988835.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5388891793) and next prime (5388891817).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5388891805 - 2⁵ = 5388891773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55), and also a Moran number because the ratio is a prime number: 97979851 = 5388891805 / (5 + 3 + 8 + 8 + 8 + 9 + 1 + 8 + 0 + 5).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48989871 + ... + 48989980.

It is an arithmetic number, because the mean of its divisors is an integer number (881818668).

Almost surely, 2^5388891805 is an apocalyptic number.

5388891805 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5388891805 is a deficient number, since it is larger than the sum of its proper divisors (1665657539).

5388891805 is a wasteful number, since it uses less digits than its factorization.

5388891805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97979867.

The product of its (nonzero) digits is 2764800, while the sum is 55.

The square root of 5388891805 is about 73409.0716805491. The cubic root of 5388891805 is about 1753.2068334338.

The spelling of 5388891805 in words is "five billion, three hundred eighty-eight million, eight hundred ninety-one thousand, eight hundred five".