1543400204 has 24 divisors (see below), whose sum is σ = 2790627840. Its totient is φ = 746427024.

The previous prime is 1543400167. The next prime is 1543400239. The reversal of 1543400204 is 4020043451.

It is a self number, because there is not a number n which added to its sum of digits gives 1543400204.

It is an unprimeable number.

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, 25844 + ... + 61275.

It is an arithmetic number, because the mean of its divisors is an integer number (116276160).

Almost surely, 2^1543400204 is an apocalyptic number.

It is an amenable number.

1543400204 is a deficient number, since it is larger than the sum of its proper divisors (1247227636).

1543400204 is a wasteful number, since it uses less digits than its factorization.

1543400204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87269 (or 87267 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1543400204 is about 39286.1324642678. The cubic root of 1543400204 is about 1155.6496296125.

Adding to 1543400204 its reverse (4020043451), we get a palindrome (5563443655).

The spelling of 1543400204 in words is "one billion, five hundred forty-three million, four hundred thousand, two hundred four".