5122018639 has 2 divisors, whose sum is σ = 5122018640. Its totient is φ = 5122018638.

The previous prime is 5122018637. The next prime is 5122018661. The reversal of 5122018639 is 9368102215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5122018639 - 2¹ = 5122018637 is a prime.

Together with 5122018637, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 5122018598 and 5122018607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5122018637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2561009319 + 2561009320.

It is an arithmetic number, because the mean of its divisors is an integer number (2561009320).

Almost surely, 2^5122018639 is an apocalyptic number.

5122018639 is a deficient number, since it is larger than the sum of its proper divisors (1).

5122018639 is an equidigital number, since it uses as much as digits as its factorization.

5122018639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 5122018639 is about 71568.2795587542. The cubic root of 5122018639 is about 1723.7742340285.

The spelling of 5122018639 in words is "five billion, one hundred twenty-two million, eighteen thousand, six hundred thirty-nine".