1081964844 has 24 divisors (see below), whose sum is σ = 2805094320. Its totient is φ = 360654912.

The previous prime is 1081964831. The next prime is 1081964887. The reversal of 1081964844 is 4484691801.

1081964844 is a `hidden beast` number, since 1 + 0 + 81 + 96 + 484 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1081964844.

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, 5008989 + ... + 5009204.

It is an arithmetic number, because the mean of its divisors is an integer number (116878930).

Almost surely, 2^1081964844 is an apocalyptic number.

It is an amenable number.

1081964844 is an abundant number, since it is smaller than the sum of its proper divisors (1723129476).

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

1081964844 is a wasteful number, since it uses less digits than its factorization.

1081964844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10018206 (or 10018198 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 1081964844 is about 32893.2340155236. The cubic root of 1081964844 is about 1026.6073829170.

The spelling of 1081964844 in words is "one billion, eighty-one million, nine hundred sixty-four thousand, eight hundred forty-four".