1293768361 has 2 divisors, whose sum is σ = 1293768362. Its totient is φ = 1293768360.

The previous prime is 1293768293. The next prime is 1293768383. The reversal of 1293768361 is 1638673921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1264229136 + 29539225 = 35556^2 + 5435^2 .

It is an emirp because it is prime and its reverse (1638673921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1293768361 - 2²⁷ = 1159550633 is a prime.

It is not a weakly prime, because it can be changed into another prime (1293768661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646884180 + 646884181.

It is an arithmetic number, because the mean of its divisors is an integer number (646884181).

Almost surely, 2^1293768361 is an apocalyptic number.

It is an amenable number.

1293768361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293768361 is an equidigital number, since it uses as much as digits as its factorization.

1293768361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 1293768361 is about 35968.9916594836. The cubic root of 1293768361 is about 1089.6462002987.

The spelling of 1293768361 in words is "one billion, two hundred ninety-three million, seven hundred sixty-eight thousand, three hundred sixty-one".