1144663340 has 12 divisors (see below), whose sum is σ = 2403793056. Its totient is φ = 457865328.

The previous prime is 1144663337. The next prime is 1144663381. The reversal of 1144663340 is 433664411.

It is a junction number, because it is equal to n+sod(n) for n = 1144663297 and 1144663306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28616564 + ... + 28616603.

It is an arithmetic number, because the mean of its divisors is an integer number (200316088).

Almost surely, 2^1144663340 is an apocalyptic number.

1144663340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144663340 is an abundant number, since it is smaller than the sum of its proper divisors (1259129716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1144663340 is a wasteful number, since it uses less digits than its factorization.

1144663340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57233176 (or 57233174 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 1144663340 is about 33832.8736586179. The cubic root of 1144663340 is about 1046.0664128724.

The spelling of 1144663340 in words is "one billion, one hundred forty-four million, six hundred sixty-three thousand, three hundred forty".