1147228361 has 4 divisors (see below), whose sum is σ = 1162943892. Its totient is φ = 1131512832.

The previous prime is 1147228349. The next prime is 1147228367. The reversal of 1147228361 is 1638227411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 598731961 + 548496400 = 24469^2 + 23420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1147228361 is a prime.

It is a super-2 number, since 2×1147228361² = 2632265824565492642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1147228367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7857656 + ... + 7857801.

It is an arithmetic number, because the mean of its divisors is an integer number (290735973).

Almost surely, 2^1147228361 is an apocalyptic number.

It is an amenable number.

1147228361 is a deficient number, since it is larger than the sum of its proper divisors (15715531).

1147228361 is an equidigital number, since it uses as much as digits as its factorization.

1147228361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15715530.

The product of its digits is 16128, while the sum is 35.

The square root of 1147228361 is about 33870.7596755668. The cubic root of 1147228361 is about 1046.8471899240.

The spelling of 1147228361 in words is "one billion, one hundred forty-seven million, two hundred twenty-eight thousand, three hundred sixty-one".