1543163648 has 72 divisors (see below), whose sum is σ = 3350819136. Its totient is φ = 705024000.

The previous prime is 1543163597. The next prime is 1543163653. The reversal of 1543163648 is 8463613451.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333833 + ... + 338423.

Almost surely, 2^1543163648 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 1543163648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1675409568).

1543163648 is an abundant number, since it is smaller than the sum of its proper divisors (1807655488).

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

1543163648 is a wasteful number, since it uses less digits than its factorization.

1543163648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4721 (or 4707 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 1543163648 is about 39283.1216682178. The cubic root of 1543163648 is about 1155.5905846931.

The spelling of 1543163648 in words is "one billion, five hundred forty-three million, one hundred sixty-three thousand, six hundred forty-eight".