1161151226 has 8 divisors (see below), whose sum is σ = 1770279924. Its totient is φ = 571057920.

The previous prime is 1161151223. The next prime is 1161151241. The reversal of 1161151226 is 6221511611.

It can be written as a sum of positive squares in 2 ways, for example, as 888934225 + 272217001 = 29815^2 + 16499^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1161151195 and 1161151204.

It is not an unprimeable number, because it can be changed into a prime (1161151223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4758695 + ... + 4758938.

Almost surely, 2^1161151226 is an apocalyptic number.

1161151226 is a deficient number, since it is larger than the sum of its proper divisors (609128698).

1161151226 is an equidigital number, since it uses as much as digits as its factorization.

1161151226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9517696.

The product of its digits is 720, while the sum is 26.

The square root of 1161151226 is about 34075.6691203562. The cubic root of 1161151226 is about 1051.0650496297.

Adding to 1161151226 its reverse (6221511611), we get a palindrome (7382662837).

The spelling of 1161151226 in words is "one billion, one hundred sixty-one million, one hundred fifty-one thousand, two hundred twenty-six".