1135555309 has 16 divisors (see below), whose sum is σ = 1329602560. Its totient is φ = 949520880.

The previous prime is 1135555303. The next prime is 1135555313. The reversal of 1135555309 is 9035555311.

It is not a de Polignac number, because 1135555309 - 2²³ = 1127166701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135555303) 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, 310924 + ... + 314554.

It is an arithmetic number, because the mean of its divisors is an integer number (83100160).

Almost surely, 2^1135555309 is an apocalyptic number.

It is an amenable number.

1135555309 is a deficient number, since it is larger than the sum of its proper divisors (194047251).

1135555309 is a wasteful number, since it uses less digits than its factorization.

1135555309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720.

The product of its (nonzero) digits is 50625, while the sum is 37.

The square root of 1135555309 is about 33698.0015579559. The cubic root of 1135555309 is about 1043.2845213128.

The spelling of 1135555309 in words is "one billion, one hundred thirty-five million, five hundred fifty-five thousand, three hundred nine".