384615816197 has 2 divisors, whose sum is σ = 384615816198. Its totient is φ = 384615816196.

The previous prime is 384615816187. The next prime is 384615816199. The reversal of 384615816197 is 791618516483.

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., 384615790276 + 25921 = 620174^2 + 161^2 .

It is a cyclic number.

It is not a de Polignac number, because 384615816197 - 2¹⁶ = 384615750661 is a prime.

Together with 384615816199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (384615816199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192307908098 + 192307908099.

It is an arithmetic number, because the mean of its divisors is an integer number (192307908099).

Almost surely, 2^384615816197 is an apocalyptic number.

It is an amenable number.

384615816197 is a deficient number, since it is larger than the sum of its proper divisors (1).

384615816197 is an equidigital number, since it uses as much as digits as its factorization.

384615816197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 59.

The spelling of 384615816197 in words is "three hundred eighty-four billion, six hundred fifteen million, eight hundred sixteen thousand, one hundred ninety-seven".