1131628535 has 16 divisors (see below), whose sum is σ = 1395786816. Its totient is φ = 880121088.

The previous prime is 1131628529. The next prime is 1131628559. The reversal of 1131628535 is 5358261311.

It is a cyclic number.

It is not a de Polignac number, because 1131628535 - 2¹⁴ = 1131612151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131628495 and 1131628504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423614 + ... + 426276.

It is an arithmetic number, because the mean of its divisors is an integer number (87236676).

Almost surely, 2^1131628535 is an apocalyptic number.

1131628535 is a deficient number, since it is larger than the sum of its proper divisors (264158281).

1131628535 is a wasteful number, since it uses less digits than its factorization.

1131628535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002.

The product of its digits is 21600, while the sum is 35.

The square root of 1131628535 is about 33639.6869040126. The cubic root of 1131628535 is about 1042.0805659146.

Adding to 1131628535 its reverse (5358261311), we get a palindrome (6489889846).

The spelling of 1131628535 in words is "one billion, one hundred thirty-one million, six hundred twenty-eight thousand, five hundred thirty-five".