1081866648 has 32 divisors (see below), whose sum is σ = 2705727600. Its totient is φ = 360480768.

The previous prime is 1081866647. The next prime is 1081866661. The reversal of 1081866648 is 8466681801.

1081866648 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1081866597 and 1081866606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081866641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66840 + ... + 81432.

Almost surely, 2^1081866648 is an apocalyptic number.

It is an amenable number.

1081866648 is an abundant number, since it is smaller than the sum of its proper divisors (1623860952).

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

1081866648 is a wasteful number, since it uses less digits than its factorization.

1081866648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17691 (or 17687 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 1081866648 is about 32891.7413342620. The cubic root of 1081866648 is about 1026.5763246718.

The spelling of 1081866648 in words is "one billion, eighty-one million, eight hundred sixty-six thousand, six hundred forty-eight".