1140843648 has 128 divisors (see below), whose sum is σ = 3575255040. Its totient is φ = 315417600.

The previous prime is 1140843623. The next prime is 1140843653. The reversal of 1140843648 is 8463480411.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76483 + ... + 90173.

It is an arithmetic number, because the mean of its divisors is an integer number (27931680).

Almost surely, 2^1140843648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1140843648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1787627520).

1140843648 is an abundant number, since it is smaller than the sum of its proper divisors (2434411392).

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

1140843648 is a wasteful number, since it uses less digits than its factorization.

1140843648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13746 (or 13734 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 1140843648 is about 33776.3770703727. The cubic root of 1140843648 is about 1044.9015567774.

The spelling of 1140843648 in words is "one billion, one hundred forty million, eight hundred forty-three thousand, six hundred forty-eight".