1944111456 has 180 divisors, whose sum is σ = 6651494388. Its totient is φ = 555424128.

The previous prime is 1944111451. The next prime is 1944111493. The reversal of 1944111456 is 6541114491.

1944111456 is a `hidden beast` number, since 1 + 94 + 4 + 111 + 456 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1944111456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944111451) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 119355 + ... + 134661.

Almost surely, 2^1944111456 is an apocalyptic number.

1944111456 is a gapful number since it is divisible by the number (16) 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 1944111456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3325747194).

1944111456 is an abundant number, since it is smaller than the sum of its proper divisors (4707382932).

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

1944111456 is a wasteful number, since it uses less digits than its factorization.

1944111456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15343 (or 15319 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 1944111456 is about 44092.0792886886. The cubic root of 1944111456 is about 1248.0741450032.

The spelling of 1944111456 in words is "one billion, nine hundred forty-four million, one hundred eleven thousand, four hundred fifty-six".