5187111823 has 16 divisors (see below), whose sum is σ = 5498966016. Its totient is φ = 4882711680.

The previous prime is 5187111799. The next prime is 5187111847. The reversal of 5187111823 is 3281117815.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (5187111799) and next prime (5187111847).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5187111823 is a prime.

It is a super-2 number, since 2×5187111823² = 53812258128612766658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5187111863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 988615 + ... + 993847.

It is an arithmetic number, because the mean of its divisors is an integer number (343685376).

Almost surely, 2^5187111823 is an apocalyptic number.

5187111823 is a deficient number, since it is larger than the sum of its proper divisors (311854193).

5187111823 is a wasteful number, since it uses less digits than its factorization.

5187111823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5934.

The product of its digits is 13440, while the sum is 37.

The square root of 5187111823 is about 72021.6066399522. The cubic root of 5187111823 is about 1731.0457133556.

The spelling of 5187111823 in words is "five billion, one hundred eighty-seven million, one hundred eleven thousand, eight hundred twenty-three".