1361306789 has 2 divisors, whose sum is σ = 1361306790. Its totient is φ = 1361306788.

The previous prime is 1361306767. The next prime is 1361306809. The reversal of 1361306789 is 9876031631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 977812900 + 383493889 = 31270^2 + 19583^2 .

It is an emirp because it is prime and its reverse (9876031631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1361306789 - 2⁸ = 1361306533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1361305789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680653394 + 680653395.

It is an arithmetic number, because the mean of its divisors is an integer number (680653395).

Almost surely, 2^1361306789 is an apocalyptic number.

It is an amenable number.

1361306789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1361306789 is an equidigital number, since it uses as much as digits as its factorization.

1361306789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 1361306789 is about 36895.8912211102. The cubic root of 1361306789 is about 1108.2863987562.

The spelling of 1361306789 in words is "one billion, three hundred sixty-one million, three hundred six thousand, seven hundred eighty-nine".