5191993518 has 16 divisors (see below), whose sum is σ = 10384833360. Its totient is φ = 1730523456.

The previous prime is 5191993489. The next prime is 5191993519. The reversal of 5191993518 is 8153991915.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5191993519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67548 + ... + 122256.

It is an arithmetic number, because the mean of its divisors is an integer number (649052085).

Almost surely, 2^5191993518 is an apocalyptic number.

5191993518 is an abundant number, since it is smaller than the sum of its proper divisors (5192839842).

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

5191993518 is a wasteful number, since it uses less digits than its factorization.

5191993518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70531.

The product of its digits is 437400, while the sum is 51.

The square root of 5191993518 is about 72055.4891593971. The cubic root of 5191993518 is about 1731.5885837055.

The spelling of 5191993518 in words is "five billion, one hundred ninety-one million, nine hundred ninety-three thousand, five hundred eighteen".