1161156827 has 2 divisors, whose sum is σ = 1161156828. Its totient is φ = 1161156826.

The previous prime is 1161156769. The next prime is 1161156881. The reversal of 1161156827 is 7286511611.

It is a strong prime.

It is an emirp because it is prime and its reverse (7286511611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1161156827 - 2¹⁰ = 1161155803 is a prime.

It is not a weakly prime, because it can be changed into another prime (1161156427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580578413 + 580578414.

It is an arithmetic number, because the mean of its divisors is an integer number (580578414).

Almost surely, 2^1161156827 is an apocalyptic number.

1161156827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161156827 is an equidigital number, since it uses as much as digits as its factorization.

1161156827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 38.

The square root of 1161156827 is about 34075.7513049969. The cubic root of 1161156827 is about 1051.0667396208.

The spelling of 1161156827 in words is "one billion, one hundred sixty-one million, one hundred fifty-six thousand, eight hundred twenty-seven".