385647391189 has 2 divisors, whose sum is σ = 385647391190. Its totient is φ = 385647391188.

The previous prime is 385647391139. The next prime is 385647391193. The reversal of 385647391189 is 981193746583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312070828689 + 73576562500 = 558633^2 + 271250^2 .

It is an emirp because it is prime and its reverse (981193746583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385647391189 - 2⁷ = 385647391061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 385647391189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385647391139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192823695594 + 192823695595.

It is an arithmetic number, because the mean of its divisors is an integer number (192823695595).

Almost surely, 2^385647391189 is an apocalyptic number.

It is an amenable number.

385647391189 is a deficient number, since it is larger than the sum of its proper divisors (1).

385647391189 is an equidigital number, since it uses as much as digits as its factorization.

385647391189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39191040, while the sum is 64.

The spelling of 385647391189 in words is "three hundred eighty-five billion, six hundred forty-seven million, three hundred ninety-one thousand, one hundred eighty-nine".