4936143889 has 2 divisors, whose sum is σ = 4936143890. Its totient is φ = 4936143888.

The previous prime is 4936143869. The next prime is 4936143913. The reversal of 4936143889 is 9883416394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4819136400 + 117007489 = 69420^2 + 10817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4936143889 is a prime.

It is not a weakly prime, because it can be changed into another prime (4936143809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2468071944 + 2468071945.

It is an arithmetic number, because the mean of its divisors is an integer number (2468071945).

Almost surely, 2^4936143889 is an apocalyptic number.

It is an amenable number.

4936143889 is a deficient number, since it is larger than the sum of its proper divisors (1).

4936143889 is an equidigital number, since it uses as much as digits as its factorization.

4936143889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 55.

The square root of 4936143889 is about 70257.6962972741. The cubic root of 4936143889 is about 1702.6652413103.

It can be divided in two parts, 493614 and 3889, that added together give a triangular number (497503 = T₉₉₇).

The spelling of 4936143889 in words is "four billion, nine hundred thirty-six million, one hundred forty-three thousand, eight hundred eighty-nine".