1143781332 has 24 divisors (see below), whose sum is σ = 2754915072. Its totient is φ = 368961600.

The previous prime is 1143781313. The next prime is 1143781337. The reversal of 1143781332 is 2331873411.

It is a junction number, because it is equal to n+sod(n) for n = 1143781293 and 1143781302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143781337) 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, 1536969 + ... + 1537712.

It is an arithmetic number, because the mean of its divisors is an integer number (114788128).

Almost surely, 2^1143781332 is an apocalyptic number.

1143781332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1143781332 is an abundant number, since it is smaller than the sum of its proper divisors (1611133740).

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

1143781332 is a wasteful number, since it uses less digits than its factorization.

1143781332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074719 (or 3074717 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 1143781332 is about 33819.8363686166. The cubic root of 1143781332 is about 1045.7976654337.

The spelling of 1143781332 in words is "one billion, one hundred forty-three million, seven hundred eighty-one thousand, three hundred thirty-two".