1143444340 has 12 divisors (see below), whose sum is σ = 2401233156. Its totient is φ = 457377728.

The previous prime is 1143444283. The next prime is 1143444349. The reversal of 1143444340 is 434443411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 178596496 + 964847844 = 13364^2 + 31062^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1143444299 and 1143444308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143444349) 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, 28586089 + ... + 28586128.

It is an arithmetic number, because the mean of its divisors is an integer number (200102763).

Almost surely, 2^1143444340 is an apocalyptic number.

1143444340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143444340 is an abundant number, since it is smaller than the sum of its proper divisors (1257788816).

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

1143444340 is a wasteful number, since it uses less digits than its factorization.

1143444340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57172226 (or 57172224 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 1143444340 is about 33814.8538367387. The cubic root of 1143444340 is about 1045.6949476459.

Adding to 1143444340 its reverse (434443411), we get a palindrome (1577887751).

It can be divided in two parts, 1 and 143444340, that added together give a palindrome (143444341).

The spelling of 1143444340 in words is "one billion, one hundred forty-three million, four hundred forty-four thousand, three hundred forty".