1144553668 has 6 divisors (see below), whose sum is σ = 2002968926. Its totient is φ = 572276832.

The previous prime is 1144553653. The next prime is 1144553677. The reversal of 1144553668 is 8663554411.

It can be written as a sum of positive squares in only one way, i.e., 794788864 + 349764804 = 28192^2 + 18702^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 143069205 + ... + 143069212.

Almost surely, 2^1144553668 is an apocalyptic number.

It is an amenable number.

1144553668 is a deficient number, since it is larger than the sum of its proper divisors (858415258).

1144553668 is a wasteful number, since it uses less digits than its factorization.

1144553668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286138421 (or 286138419 counting only the distinct ones).

The product of its digits is 345600, while the sum is 43.

The square root of 1144553668 is about 33831.2528292997. The cubic root of 1144553668 is about 1046.0330033811.

The spelling of 1144553668 in words is "one billion, one hundred forty-four million, five hundred fifty-three thousand, six hundred sixty-eight".