385930322581 has 2 divisors, whose sum is σ = 385930322582. Its totient is φ = 385930322580.

The previous prime is 385930322567. The next prime is 385930322593. The reversal of 385930322581 is 185223039583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385920500625 + 9821956 = 621225^2 + 3134^2 .

It is a cyclic number.

It is not a de Polignac number, because 385930322581 - 2²⁹ = 385393451669 is a prime.

It is a super-2 number, since 2×385930322581² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385930322381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192965161290 + 192965161291.

It is an arithmetic number, because the mean of its divisors is an integer number (192965161291).

Almost surely, 2^385930322581 is an apocalyptic number.

It is an amenable number.

385930322581 is a deficient number, since it is larger than the sum of its proper divisors (1).

385930322581 is an equidigital number, since it uses as much as digits as its factorization.

385930322581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 385930322581 in words is "three hundred eighty-five billion, nine hundred thirty million, three hundred twenty-two thousand, five hundred eighty-one".