1778130241 has 2 divisors, whose sum is σ = 1778130242. Its totient is φ = 1778130240.

The previous prime is 1778130239. The next prime is 1778130301. The reversal of 1778130241 is 1420318771.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1770726400 + 7403841 = 42080^2 + 2721^2 .

It is a cyclic number.

It is not a de Polignac number, because 1778130241 - 2¹ = 1778130239 is a prime.

Together with 1778130239, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1778130197 and 1778130206.

It is not a weakly prime, because it can be changed into another prime (1778130841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 889065120 + 889065121.

It is an arithmetic number, because the mean of its divisors is an integer number (889065121).

Almost surely, 2^1778130241 is an apocalyptic number.

It is an amenable number.

1778130241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1778130241 is an equidigital number, since it uses as much as digits as its factorization.

1778130241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 1778130241 is about 42167.8816280828. The cubic root of 1778130241 is about 1211.4937817869.

The spelling of 1778130241 in words is "one billion, seven hundred seventy-eight million, one hundred thirty thousand, two hundred forty-one".