1000945656 has 24 divisors (see below), whose sum is σ = 2710894680. Its totient is φ = 333648528.

The previous prime is 1000945633. The next prime is 1000945661. The reversal of 1000945656 is 6565490001.

1000945656 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 94 + 565 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1000945656.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6950940 + ... + 6951083.

It is an arithmetic number, because the mean of its divisors is an integer number (112953945).

Almost surely, 2^1000945656 is an apocalyptic number.

It is an amenable number.

1000945656 is an abundant number, since it is smaller than the sum of its proper divisors (1709949024).

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

1000945656 is a wasteful number, since it uses less digits than its factorization.

1000945656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13902035 (or 13902028 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 1000945656 is about 31637.7252026754. The cubic root of 1000945656 is about 1000.3151193560.

The spelling of 1000945656 in words is "one billion, nine hundred forty-five thousand, six hundred fifty-six".