1145226644 has 6 divisors (see below), whose sum is σ = 2004146634. Its totient is φ = 572613320.

The previous prime is 1145226631. The next prime is 1145226647. The reversal of 1145226644 is 4466225411.

It can be written as a sum of positive squares in only one way, i.e., 965344900 + 179881744 = 31070^2 + 13412^2 .

It is a super-2 number, since 2×1145226644² = 2623088132255005472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145226647) 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 as a sum of consecutive naturals, namely, 143153327 + ... + 143153334.

It is an arithmetic number, because the mean of its divisors is an integer number (334024439).

Almost surely, 2^1145226644 is an apocalyptic number.

It is an amenable number.

1145226644 is a deficient number, since it is larger than the sum of its proper divisors (858919990).

1145226644 is a wasteful number, since it uses less digits than its factorization.

1145226644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286306665 (or 286306663 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 1145226644 is about 33841.1974374430. The cubic root of 1145226644 is about 1046.2379791140.

The spelling of 1145226644 in words is "one billion, one hundred forty-five million, two hundred twenty-six thousand, six hundred forty-four".