8236724381 has 2 divisors, whose sum is σ = 8236724382. Its totient is φ = 8236724380.

The previous prime is 8236724351. The next prime is 8236724399. The reversal of 8236724381 is 1834276328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7733619481 + 503104900 = 87941^2 + 22430^2 .

It is a cyclic number.

It is not a de Polignac number, because 8236724381 - 2¹⁰ = 8236723357 is a prime.

It is a super-2 number, since 2×8236724381² (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 (8236724311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4118362190 + 4118362191.

It is an arithmetic number, because the mean of its divisors is an integer number (4118362191).

Almost surely, 2^8236724381 is an apocalyptic number.

It is an amenable number.

8236724381 is a deficient number, since it is larger than the sum of its proper divisors (1).

8236724381 is an equidigital number, since it uses as much as digits as its factorization.

8236724381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 44.

The square root of 8236724381 is about 90756.4013224412. The cubic root of 8236724381 is about 2019.5355908003.

The spelling of 8236724381 in words is "eight billion, two hundred thirty-six million, seven hundred twenty-four thousand, three hundred eighty-one".