1131653505 has 16 divisors (see below), whose sum is σ = 1854808704. Its totient is φ = 588827520.

The previous prime is 1131653503. The next prime is 1131653531. The reversal of 1131653505 is 5053561311.

It is not a de Polignac number, because 1131653505 - 2¹ = 1131653503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131653503) 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, 919429 + ... + 920658.

It is an arithmetic number, because the mean of its divisors is an integer number (115925544).

Almost surely, 2^1131653505 is an apocalyptic number.

1131653505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1131653505 is a deficient number, since it is larger than the sum of its proper divisors (723155199).

1131653505 is a wasteful number, since it uses less digits than its factorization.

1131653505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840136.

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 1131653505 is about 33640.0580409725. The cubic root of 1131653505 is about 1042.0882305500.

The spelling of 1131653505 in words is "one billion, one hundred thirty-one million, six hundred fifty-three thousand, five hundred five".