784143361 has 2 divisors, whose sum is σ = 784143362. Its totient is φ = 784143360.

The previous prime is 784143359. The next prime is 784143407. The reversal of 784143361 is 163341487.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 780364225 + 3779136 = 27935^2 + 1944^2 .

It is a cyclic number.

It is not a de Polignac number, because 784143361 - 2¹ = 784143359 is a prime.

It is a super-2 number, since 2×784143361² = 1229761621200752642, which contains 22 as substring.

Together with 784143359, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 784143361.

It is not a weakly prime, because it can be changed into another prime (784143161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392071680 + 392071681.

It is an arithmetic number, because the mean of its divisors is an integer number (392071681).

Almost surely, 2^784143361 is an apocalyptic number.

It is an amenable number.

784143361 is a deficient number, since it is larger than the sum of its proper divisors (1).

784143361 is an equidigital number, since it uses as much as digits as its factorization.

784143361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 784143361 is about 28002.5599008376. The cubic root of 784143361 is about 922.1434587921.

The spelling of 784143361 in words is "seven hundred eighty-four million, one hundred forty-three thousand, three hundred sixty-one".