1143394560 has 432 divisors, whose sum is σ = 4936014720. Its totient is φ = 237404160.

The previous prime is 1143394543. The next prime is 1143394601. The reversal of 1143394560 is 654933411.

1143394560 is a `hidden beast` number, since 1 + 1 + 4 + 3 + 3 + 94 + 560 = 666.

It is a super-2 number, since 2×1143394560² = 2614702239675187200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 886396 + ... + 887684.

It is an arithmetic number, because the mean of its divisors is an integer number (11425960).

Almost surely, 2^1143394560 is an apocalyptic number.

1143394560 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 1143394560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2468007360).

1143394560 is an abundant number, since it is smaller than the sum of its proper divisors (3792620160).

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

1143394560 is a wasteful number, since it uses less digits than its factorization.

1143394560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 1143394560 is about 33814.1177616687. The cubic root of 1143394560 is about 1045.6797726033.

The spelling of 1143394560 in words is "one billion, one hundred forty-three million, three hundred ninety-four thousand, five hundred sixty".