1143275744 has 48 divisors (see below), whose sum is σ = 2480374512. Its totient is φ = 515386368.

The previous prime is 1143275741. The next prime is 1143275747. The reversal of 1143275744 is 4475723411.

It is an interprime number because it is at equal distance from previous prime (1143275741) and next prime (1143275747).

It is a junction number, because it is equal to n+sod(n) for n = 1143275698 and 1143275707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143275741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14069 + ... + 49844.

It is an arithmetic number, because the mean of its divisors is an integer number (51674469).

Almost surely, 2^1143275744 is an apocalyptic number.

It is an amenable number.

1143275744 is an abundant number, since it is smaller than the sum of its proper divisors (1337098768).

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

1143275744 is a wasteful number, since it uses less digits than its factorization.

1143275744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63979 (or 63971 counting only the distinct ones).

The product of its digits is 94080, while the sum is 38.

The square root of 1143275744 is about 33812.3608167191. The cubic root of 1143275744 is about 1045.6435506970.

The spelling of 1143275744 in words is "one billion, one hundred forty-three million, two hundred seventy-five thousand, seven hundred forty-four".