8143952813 has 2 divisors, whose sum is σ = 8143952814. Its totient is φ = 8143952812.

The previous prime is 8143952741. The next prime is 8143952893. The reversal of 8143952813 is 3182593418.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4689099529 + 3454853284 = 68477^2 + 58778^2 .

It is a cyclic number.

It is not a de Polignac number, because 8143952813 - 2¹² = 8143948717 is a prime.

It is a super-2 number, since 2×8143952813² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8143952893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4071976406 + 4071976407.

It is an arithmetic number, because the mean of its divisors is an integer number (4071976407).

Almost surely, 2^8143952813 is an apocalyptic number.

It is an amenable number.

8143952813 is a deficient number, since it is larger than the sum of its proper divisors (1).

8143952813 is an equidigital number, since it uses as much as digits as its factorization.

8143952813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The square root of 8143952813 is about 90243.8519401737. The cubic root of 8143952813 is about 2011.9248257053.

The spelling of 8143952813 in words is "eight billion, one hundred forty-three million, nine hundred fifty-two thousand, eight hundred thirteen".