1355080509 has 16 divisors (see below), whose sum is σ = 2032314240. Its totient is φ = 903385548.

The previous prime is 1355080471. The next prime is 1355080537. The reversal of 1355080509 is 9050805531.

It is a happy number.

It is not a de Polignac number, because 1355080509 - 2⁸ = 1355080253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355080549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307617 + ... + 311990.

It is an arithmetic number, because the mean of its divisors is an integer number (127019640).

Almost surely, 2^1355080509 is an apocalyptic number.

It is an amenable number.

1355080509 is a deficient number, since it is larger than the sum of its proper divisors (677233731).

1355080509 is an frugal number, since it uses more digits than its factorization.

1355080509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619628 (or 619610 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 1355080509 is about 36811.4181878395. The cubic root of 1355080509 is about 1106.5941403314.

The spelling of 1355080509 in words is "one billion, three hundred fifty-five million, eighty thousand, five hundred nine".