6889138063 has 2 divisors, whose sum is σ = 6889138064. Its totient is φ = 6889138062.

The previous prime is 6889138057. The next prime is 6889138079. The reversal of 6889138063 is 3608319886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6889138063 - 2⁵ = 6889138031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6889138063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6889138013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3444569031 + 3444569032.

It is an arithmetic number, because the mean of its divisors is an integer number (3444569032).

Almost surely, 2^6889138063 is an apocalyptic number.

6889138063 is a deficient number, since it is larger than the sum of its proper divisors (1).

6889138063 is an equidigital number, since it uses as much as digits as its factorization.

6889138063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 6889138063 is about 83000.8317006523. The cubic root of 6889138063 is about 1902.7787653540.

The spelling of 6889138063 in words is "six billion, eight hundred eighty-nine million, one hundred thirty-eight thousand, sixty-three".