385442661349 has 2 divisors, whose sum is σ = 385442661350. Its totient is φ = 385442661348.

The previous prime is 385442661319. The next prime is 385442661377. The reversal of 385442661349 is 943166244583.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 307517938849 + 77924722500 = 554543^2 + 279150^2 .

It is a cyclic number.

It is not a de Polignac number, because 385442661349 - 2¹⁵ = 385442628581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 385442661349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385442661319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192721330674 + 192721330675.

It is an arithmetic number, because the mean of its divisors is an integer number (192721330675).

Almost surely, 2^385442661349 is an apocalyptic number.

It is an amenable number.

385442661349 is a deficient number, since it is larger than the sum of its proper divisors (1).

385442661349 is an equidigital number, since it uses as much as digits as its factorization.

385442661349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14929920, while the sum is 55.

The spelling of 385442661349 in words is "three hundred eighty-five billion, four hundred forty-two million, six hundred sixty-one thousand, three hundred forty-nine".