1543553648 has 40 divisors (see below), whose sum is σ = 3680785248. Its totient is φ = 610636032.

The previous prime is 1543553633. The next prime is 1543553653. The reversal of 1543553648 is 8463553451.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1543553599 and 1543553608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 528611 + ... + 531522.

Almost surely, 2^1543553648 is an apocalyptic number.

It is an amenable number.

1543553648 is an abundant number, since it is smaller than the sum of its proper divisors (2137231600).

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

1543553648 is a wasteful number, since it uses less digits than its factorization.

1543553648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060161 (or 1060155 counting only the distinct ones).

The product of its digits is 864000, while the sum is 44.

The square root of 1543553648 is about 39288.0853185797. The cubic root of 1543553648 is about 1155.6879263603.

The spelling of 1543553648 in words is "one billion, five hundred forty-three million, five hundred fifty-three thousand, six hundred forty-eight".