385616981371 has 2 divisors, whose sum is σ = 385616981372. Its totient is φ = 385616981370.

The previous prime is 385616981359. The next prime is 385616981437. The reversal of 385616981371 is 173189616583.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 385616981371 - 2¹¹ = 385616979323 is a prime.

It is a super-2 number, since 2×385616981371² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (385616981171) 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, 192808490685 + 192808490686.

It is an arithmetic number, because the mean of its divisors is an integer number (192808490686).

Almost surely, 2^385616981371 is an apocalyptic number.

385616981371 is a deficient number, since it is larger than the sum of its proper divisors (1).

385616981371 is an equidigital number, since it uses as much as digits as its factorization.

385616981371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 58.

The spelling of 385616981371 in words is "three hundred eighty-five billion, six hundred sixteen million, nine hundred eighty-one thousand, three hundred seventy-one".