3728085637231 has 2 divisors, whose sum is σ = 3728085637232. Its totient is φ = 3728085637230.

The previous prime is 3728085637189. The next prime is 3728085637259. The reversal of 3728085637231 is 1327365808273.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3728085637231 - 2⁷ = 3728085637103 is a prime.

It is a super-2 number, since 2×3728085637231² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3728085637831) 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, 1864042818615 + 1864042818616.

It is an arithmetic number, because the mean of its divisors is an integer number (1864042818616).

Almost surely, 2^{3728085637231} is an apocalyptic number.

3728085637231 is a deficient number, since it is larger than the sum of its proper divisors (1).

3728085637231 is an equidigital number, since it uses as much as digits as its factorization.

3728085637231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10160640, while the sum is 55.

The spelling of 3728085637231 in words is "three trillion, seven hundred twenty-eight billion, eighty-five million, six hundred thirty-seven thousand, two hundred thirty-one".