1011646944 has 432 divisors, whose sum is σ = 3854148480. Its totient is φ = 248935680.

The previous prime is 1011646943. The next prime is 1011646957. The reversal of 1011646944 is 4496461101.

1011646944 is a `hidden beast` number, since 1 + 0 + 1 + 1 + 646 + 9 + 4 + 4 = 666.

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

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1011646899 and 1011646908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011646943) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 53244567 + ... + 53244585.

It is an arithmetic number, because the mean of its divisors is an integer number (8921640).

Almost surely, 2^1011646944 is an apocalyptic number.

1011646944 is a gapful number since it is divisible by the number (14) 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 1011646944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1927074240).

1011646944 is an abundant number, since it is smaller than the sum of its proper divisors (2842501536).

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

1011646944 is an equidigital number, since it uses as much as digits as its factorization.

1011646944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 42 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1011646944 is about 31806.3978469741. The cubic root of 1011646944 is about 1003.8673390748.

The spelling of 1011646944 in words is "one billion, eleven million, six hundred forty-six thousand, nine hundred forty-four".