1543382456 has 64 divisors (see below), whose sum is σ = 3612833280. Its totient is φ = 600497280.

The previous prime is 1543382429. The next prime is 1543382459. The reversal of 1543382456 is 6542833451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1543382459) 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 15 ways as a sum of consecutive naturals, for example, 653630 + ... + 655986.

It is an arithmetic number, because the mean of its divisors is an integer number (56450520).

Almost surely, 2^1543382456 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 1543382456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1806416640).

1543382456 is an abundant number, since it is smaller than the sum of its proper divisors (2069450824).

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

1543382456 is a wasteful number, since it uses less digits than its factorization.

1543382456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444 (or 3440 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

The square root of 1543382456 is about 39285.9065823865. The cubic root of 1543382456 is about 1155.6451998804.

The spelling of 1543382456 in words is "one billion, five hundred forty-three million, three hundred eighty-two thousand, four hundred fifty-six".