1131887927 has 2 divisors, whose sum is σ = 1131887928. Its totient is φ = 1131887926.

The previous prime is 1131887923. The next prime is 1131887947. The reversal of 1131887927 is 7297881311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131887927 - 2² = 1131887923 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131887923) by changing a digit.

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 as a sum of consecutive naturals, namely, 565943963 + 565943964.

It is an arithmetic number, because the mean of its divisors is an integer number (565943964).

Almost surely, 2^1131887927 is an apocalyptic number.

1131887927 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131887927 is an equidigital number, since it uses as much as digits as its factorization.

1131887927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 47.

The square root of 1131887927 is about 33643.5421292111. The cubic root of 1131887927 is about 1042.1601817671.

The spelling of 1131887927 in words is "one billion, one hundred thirty-one million, eight hundred eighty-seven thousand, nine hundred twenty-seven".