1355287793 has 2 divisors, whose sum is σ = 1355287794. Its totient is φ = 1355287792.

The previous prime is 1355287777. The next prime is 1355287847. The reversal of 1355287793 is 3977825531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 954006769 + 401281024 = 30887^2 + 20032^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355287793 - 2⁴ = 1355287777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1355287733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677643896 + 677643897.

It is an arithmetic number, because the mean of its divisors is an integer number (677643897).

Almost surely, 2^1355287793 is an apocalyptic number.

It is an amenable number.

1355287793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355287793 is an equidigital number, since it uses as much as digits as its factorization.

1355287793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1587600, while the sum is 50.

The square root of 1355287793 is about 36814.2335652937. The cubic root of 1355287793 is about 1106.6505619642.

The spelling of 1355287793 in words is "one billion, three hundred fifty-five million, two hundred eighty-seven thousand, seven hundred ninety-three".