2943648540 has 432 divisors, whose sum is σ = 11042583552. Its totient is φ = 656014464.

The previous prime is 2943648523. The next prime is 2943648559. The reversal of 2943648540 is 458463492.

2943648540 is a `hidden beast` number, since 2 + 9 + 43 + 64 + 8 + 540 = 666.

2943648540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11192449 + ... + 11192711.

It is an arithmetic number, because the mean of its divisors is an integer number (25561536).

Almost surely, 2^2943648540 is an apocalyptic number.

2943648540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2943648540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5521291776).

2943648540 is an abundant number, since it is smaller than the sum of its proper divisors (8098935012).

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

2943648540 is a wasteful number, since it uses less digits than its factorization.

2943648540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The square root of 2943648540 is about 54255.4010214651. The cubic root of 2943648540 is about 1433.1621127125.

The spelling of 2943648540 in words is "two billion, nine hundred forty-three million, six hundred forty-eight thousand, five hundred forty".