1361389793 has 2 divisors, whose sum is σ = 1361389794. Its totient is φ = 1361389792.

The previous prime is 1361389741. The next prime is 1361389811. The reversal of 1361389793 is 3979831631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1359249424 + 2140369 = 36868^2 + 1463^2 .

It is a cyclic number.

It is not a de Polignac number, because 1361389793 - 2²⁰ = 1360341217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1361389093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680694896 + 680694897.

It is an arithmetic number, because the mean of its divisors is an integer number (680694897).

Almost surely, 2^1361389793 is an apocalyptic number.

It is an amenable number.

1361389793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361389793 is an equidigital number, since it uses as much as digits as its factorization.

1361389793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 50.

The square root of 1361389793 is about 36897.0160446614. The cubic root of 1361389793 is about 1108.3089237631.

The spelling of 1361389793 in words is "one billion, three hundred sixty-one million, three hundred eighty-nine thousand, seven hundred ninety-three".