4889186639 has 2 divisors, whose sum is σ = 4889186640. Its totient is φ = 4889186638.

The previous prime is 4889186591. The next prime is 4889186663. The reversal of 4889186639 is 9366819884.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4889186639 is a prime.

It is a super-2 number, since 2×4889186639² = 47808291981952232642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4889126639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2444593319 + 2444593320.

It is an arithmetic number, because the mean of its divisors is an integer number (2444593320).

Almost surely, 2^4889186639 is an apocalyptic number.

4889186639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4889186639 is an equidigital number, since it uses as much as digits as its factorization.

4889186639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17915904, while the sum is 62.

The square root of 4889186639 is about 69922.7190475313. The cubic root of 4889186639 is about 1697.2489112487.

The spelling of 4889186639 in words is "four billion, eight hundred eighty-nine million, one hundred eighty-six thousand, six hundred thirty-nine".