1543464456 has 128 divisors (see below), whose sum is σ = 4114022400. Its totient is φ = 481824000.

The previous prime is 1543464413. The next prime is 1543464457. The reversal of 1543464456 is 6544643451.

It is not an unprimeable number, because it can be changed into a prime (1543464457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3222025 + ... + 3222503.

It is an arithmetic number, because the mean of its divisors is an integer number (32140800).

Almost surely, 2^1543464456 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 1543464456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2057011200).

1543464456 is an abundant number, since it is smaller than the sum of its proper divisors (2570557944).

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

1543464456 is a wasteful number, since it uses less digits than its factorization.

1543464456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 647 counting only the distinct ones).

The product of its digits is 691200, while the sum is 42.

The square root of 1543464456 is about 39286.9501997801. The cubic root of 1543464456 is about 1155.6656660169.

The spelling of 1543464456 in words is "one billion, five hundred forty-three million, four hundred sixty-four thousand, four hundred fifty-six".