1355131185 has 16 divisors (see below), whose sum is σ = 2175189120. Its totient is φ = 720410240.

The previous prime is 1355131171. The next prime is 1355131201. The reversal of 1355131185 is 5811315531.

It is not a de Polignac number, because 1355131185 - 2⁶ = 1355131121 is a prime.

It is a super-3 number, since 3×1355131185³ (a number of 28 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140580 + ... + 149909.

It is an arithmetic number, because the mean of its divisors is an integer number (135949320).

Almost surely, 2^1355131185 is an apocalyptic number.

1355131185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1355131185 is a deficient number, since it is larger than the sum of its proper divisors (820057935).

1355131185 is a wasteful number, since it uses less digits than its factorization.

1355131185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290808.

The product of its digits is 9000, while the sum is 33.

The square root of 1355131185 is about 36812.1065004436. The cubic root of 1355131185 is about 1106.6079346079.

The spelling of 1355131185 in words is "one billion, three hundred fifty-five million, one hundred thirty-one thousand, one hundred eighty-five".