1355124493 has 2 divisors, whose sum is σ = 1355124494. Its totient is φ = 1355124492.

The previous prime is 1355124473. The next prime is 1355124521. The reversal of 1355124493 is 3944215531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1307762569 + 47361924 = 36163^2 + 6882^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355124493 - 2²⁹ = 818253581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1355124473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677562246 + 677562247.

It is an arithmetic number, because the mean of its divisors is an integer number (677562247).

Almost surely, 2^1355124493 is an apocalyptic number.

It is an amenable number.

1355124493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355124493 is an equidigital number, since it uses as much as digits as its factorization.

1355124493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The square root of 1355124493 is about 36812.0156063207. The cubic root of 1355124493 is about 1106.6061130296.

The spelling of 1355124493 in words is "one billion, three hundred fifty-five million, one hundred twenty-four thousand, four hundred ninety-three".