5018326781 has 16 divisors (see below), whose sum is σ = 5743438848. Its totient is φ = 4343673600.

The previous prime is 5018326771. The next prime is 5018326793. The reversal of 5018326781 is 1876238105.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5018326781 is a prime.

It is a super-2 number, since 2×5018326781² = 50367207361803643922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5018326771) 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, 17996 + ... + 101786.

It is an arithmetic number, because the mean of its divisors is an integer number (358964928).

Almost surely, 2^5018326781 is an apocalyptic number.

It is an amenable number.

5018326781 is a deficient number, since it is larger than the sum of its proper divisors (725112067).

5018326781 is a wasteful number, since it uses less digits than its factorization.

5018326781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84092.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 5018326781 is about 70840.1494987129. The cubic root of 5018326781 is about 1712.0626229249.

The spelling of 5018326781 in words is "five billion, eighteen million, three hundred twenty-six thousand, seven hundred eighty-one".