385815622189 has 2 divisors, whose sum is σ = 385815622190. Its totient is φ = 385815622188.

The previous prime is 385815622169. The next prime is 385815622237. The reversal of 385815622189 is 981226518583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 371721896100 + 14093726089 = 609690^2 + 118717^2 .

It is an emirp because it is prime and its reverse (981226518583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385815622189 - 2¹⁵ = 385815589421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385815622169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192907811094 + 192907811095.

It is an arithmetic number, because the mean of its divisors is an integer number (192907811095).

Almost surely, 2^385815622189 is an apocalyptic number.

It is an amenable number.

385815622189 is a deficient number, since it is larger than the sum of its proper divisors (1).

385815622189 is an equidigital number, since it uses as much as digits as its factorization.

385815622189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8294400, while the sum is 58.

The spelling of 385815622189 in words is "three hundred eighty-five billion, eight hundred fifteen million, six hundred twenty-two thousand, one hundred eighty-nine".