5123918109 has 16 divisors (see below), whose sum is σ = 6862116800. Its totient is φ = 3400859520.

The previous prime is 5123918089. The next prime is 5123918113. The reversal of 5123918109 is 9018193215.

It is not a de Polignac number, because 5123918109 - 2²⁰ = 5122869533 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5123918209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937617 + ... + 943065.

It is an arithmetic number, because the mean of its divisors is an integer number (428882300).

Almost surely, 2^5123918109 is an apocalyptic number.

It is an amenable number.

5123918109 is a deficient number, since it is larger than the sum of its proper divisors (1738198691).

5123918109 is a wasteful number, since it uses less digits than its factorization.

5123918109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6780.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 5123918109 is about 71581.5486630458. The cubic root of 5123918109 is about 1723.9872914844.

The spelling of 5123918109 in words is "five billion, one hundred twenty-three million, nine hundred eighteen thousand, one hundred nine".