385698946861 has 2 divisors, whose sum is σ = 385698946862. Its totient is φ = 385698946860.

The previous prime is 385698946859. The next prime is 385698946873. The reversal of 385698946861 is 168649896583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316164421225 + 69534525636 = 562285^2 + 263694^2 .

It is a cyclic number.

It is not a de Polignac number, because 385698946861 - 2¹ = 385698946859 is a prime.

Together with 385698946859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385698946961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192849473430 + 192849473431.

It is an arithmetic number, because the mean of its divisors is an integer number (192849473431).

Almost surely, 2^385698946861 is an apocalyptic number.

It is an amenable number.

385698946861 is a deficient number, since it is larger than the sum of its proper divisors (1).

385698946861 is an equidigital number, since it uses as much as digits as its factorization.

385698946861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 537477120, while the sum is 73.

The spelling of 385698946861 in words is "three hundred eighty-five billion, six hundred ninety-eight million, nine hundred forty-six thousand, eight hundred sixty-one".