1131165851 has 16 divisors (see below), whose sum is σ = 1237420800. Its totient is φ = 1031116800.

The previous prime is 1131165811. The next prime is 1131165899. The reversal of 1131165851 is 1585611311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131165851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1131165811) 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, 21515 + ... + 52203.

It is an arithmetic number, because the mean of its divisors is an integer number (77338800).

Almost surely, 2^1131165851 is an apocalyptic number.

1131165851 is a deficient number, since it is larger than the sum of its proper divisors (106254949).

1131165851 is a wasteful number, since it uses less digits than its factorization.

1131165851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30790.

The product of its digits is 3600, while the sum is 32.

The square root of 1131165851 is about 33632.8091452379. The cubic root of 1131165851 is about 1041.9385229159.

The spelling of 1131165851 in words is "one billion, one hundred thirty-one million, one hundred sixty-five thousand, eight hundred fifty-one".