1543422944 has 48 divisors (see below), whose sum is σ = 3495776256. Its totient is φ = 657072000.

The previous prime is 1543422943. The next prime is 1543422961. The reversal of 1543422944 is 4492243451.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1543422898 and 1543422907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1543422941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11009 + ... + 56639.

It is an arithmetic number, because the mean of its divisors is an integer number (72828672).

Almost surely, 2^1543422944 is an apocalyptic number.

1543422944 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 1543422944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1747888128).

1543422944 is an abundant number, since it is smaller than the sum of its proper divisors (1952353312).

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

1543422944 is a wasteful number, since it uses less digits than its factorization.

1543422944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45799 (or 45791 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 1543422944 is about 39286.4218783029. The cubic root of 1543422944 is about 1155.6553052507.

The spelling of 1543422944 in words is "one billion, five hundred forty-three million, four hundred twenty-two thousand, nine hundred forty-four".