1141944664 has 64 divisors (see below), whose sum is σ = 2569190400. Its totient is φ = 465235584.

The previous prime is 1141944659. The next prime is 1141944667. The reversal of 1141944664 is 4664491411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141944667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212442 + ... + 217750.

It is an arithmetic number, because the mean of its divisors is an integer number (40143600).

Almost surely, 2^1141944664 is an apocalyptic number.

1141944664 is a gapful number since it is divisible by the number (14) 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 1141944664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1284595200).

1141944664 is an abundant number, since it is smaller than the sum of its proper divisors (1427245736).

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

1141944664 is a wasteful number, since it uses less digits than its factorization.

1141944664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5512 (or 5508 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 1141944664 is about 33792.6717499519. The cubic root of 1141944664 is about 1045.2375898046.

The spelling of 1141944664 in words is "one billion, one hundred forty-one million, nine hundred forty-four thousand, six hundred sixty-four".