1943288648 has 48 divisors (see below), whose sum is σ = 4246053120. Its totient is φ = 831364128.

The previous prime is 1943288639. The next prime is 1943288657. The reversal of 1943288648 is 8468823491.

It is an interprime number because it is at equal distance from previous prime (1943288639) and next prime (1943288657).

It is a self number, because there is not a number n which added to its sum of digits gives 1943288648.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233861 + ... + 242027.

It is an arithmetic number, because the mean of its divisors is an integer number (88459440).

Almost surely, 2^1943288648 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 1943288648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2123026560).

1943288648 is an abundant number, since it is smaller than the sum of its proper divisors (2302764472).

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

1943288648 is a wasteful number, since it uses less digits than its factorization.

1943288648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8794 (or 8783 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 53.

The square root of 1943288648 is about 44082.7477365012. The cubic root of 1943288648 is about 1247.8980456515.

The spelling of 1943288648 in words is "one billion, nine hundred forty-three million, two hundred eighty-eight thousand, six hundred forty-eight".