1355924789 has 2 divisors, whose sum is σ = 1355924790. Its totient is φ = 1355924788.

The previous prime is 1355924749. The next prime is 1355924803. The reversal of 1355924789 is 9874295531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1351150564 + 4774225 = 36758^2 + 2185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1355924789 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1355924789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1355924729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677962394 + 677962395.

It is an arithmetic number, because the mean of its divisors is an integer number (677962395).

Almost surely, 2^1355924789 is an apocalyptic number.

It is an amenable number.

1355924789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355924789 is an equidigital number, since it uses as much as digits as its factorization.

1355924789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2721600, while the sum is 53.

The square root of 1355924789 is about 36822.8840396838. The cubic root of 1355924789 is about 1106.8239129855.

The spelling of 1355924789 in words is "one billion, three hundred fifty-five million, nine hundred twenty-four thousand, seven hundred eighty-nine".