4936143809 has 2 divisors, whose sum is σ = 4936143810. Its totient is φ = 4936143808.

The previous prime is 4936143757. The next prime is 4936143847. The reversal of 4936143809 is 9083416394.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3243644209 + 1692499600 = 56953^2 + 41140^2 .

It is a cyclic number.

It is not a de Polignac number, because 4936143809 - 2²⁰ = 4935095233 is a prime.

It is not a weakly prime, because it can be changed into another prime (4936143859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2468071904 + 2468071905.

It is an arithmetic number, because the mean of its divisors is an integer number (2468071905).

Almost surely, 2^4936143809 is an apocalyptic number.

It is an amenable number.

4936143809 is a deficient number, since it is larger than the sum of its proper divisors (1).

4936143809 is an equidigital number, since it uses as much as digits as its factorization.

4936143809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 4936143809 is about 70257.6957279414. The cubic root of 4936143809 is about 1702.6652321119.

The spelling of 4936143809 in words is "four billion, nine hundred thirty-six million, one hundred forty-three thousand, eight hundred nine".