1161146227 has 2 divisors, whose sum is σ = 1161146228. Its totient is φ = 1161146226.

The previous prime is 1161146219. The next prime is 1161146251. The reversal of 1161146227 is 7226411611.

It is a weak prime.

It is an emirp because it is prime and its reverse (7226411611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1161146227 - 2³ = 1161146219 is a prime.

It is not a weakly prime, because it can be changed into another prime (1161146267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580573113 + 580573114.

It is an arithmetic number, because the mean of its divisors is an integer number (580573114).

Almost surely, 2^1161146227 is an apocalyptic number.

1161146227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161146227 is an equidigital number, since it uses as much as digits as its factorization.

1161146227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 31.

The square root of 1161146227 is about 34075.5957688197. The cubic root of 1161146227 is about 1051.0635412755.

Adding to 1161146227 its reverse (7226411611), we get a palindrome (8387557838).

The spelling of 1161146227 in words is "one billion, one hundred sixty-one million, one hundred forty-six thousand, two hundred twenty-seven".