1143805740 has 288 divisors, whose sum is σ = 4092705792. Its totient is φ = 233587200.

The previous prime is 1143805609. The next prime is 1143805769. The reversal of 1143805740 is 475083411.

It is a Harshad number since it is a multiple of its sum of digits (33).

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 95 ways as a sum of consecutive naturals, for example, 3608062 + ... + 3608378.

It is an arithmetic number, because the mean of its divisors is an integer number (14210784).

Almost surely, 2^1143805740 is an apocalyptic number.

1143805740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143805740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2046352896).

1143805740 is an abundant number, since it is smaller than the sum of its proper divisors (2948900052).

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

1143805740 is a wasteful number, since it uses less digits than its factorization.

1143805740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 1143805740 is about 33820.1972200045. The cubic root of 1143805740 is about 1045.8051043986.

The spelling of 1143805740 in words is "one billion, one hundred forty-three million, eight hundred five thousand, seven hundred forty".