1355690393 has 2 divisors, whose sum is σ = 1355690394. Its totient is φ = 1355690392.

The previous prime is 1355690389. The next prime is 1355690459. The reversal of 1355690393 is 3930965531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1348945984 + 6744409 = 36728^2 + 2597^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355690393 - 2² = 1355690389 is a prime.

It is not a weakly prime, because it can be changed into another prime (1355690383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677845196 + 677845197.

It is an arithmetic number, because the mean of its divisors is an integer number (677845197).

Almost surely, 2^1355690393 is an apocalyptic number.

It is an amenable number.

1355690393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355690393 is an equidigital number, since it uses as much as digits as its factorization.

1355690393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 328050, while the sum is 44.

The square root of 1355690393 is about 36819.7011530512. The cubic root of 1355690393 is about 1106.7601311664.

The spelling of 1355690393 in words is "one billion, three hundred fifty-five million, six hundred ninety thousand, three hundred ninety-three".