1090630944 has 144 divisors (see below), whose sum is σ = 3430764792. Its totient is φ = 326467584.

The previous prime is 1090630943. The next prime is 1090630963. The reversal of 1090630944 is 4490360901.

1090630944 is a `hidden beast` number, since 10 + 9 + 0 + 630 + 9 + 4 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 674960400 + 415670544 = 25980^2 + 20388^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×1090630944² = 2378951712020662272, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1090630899 and 1090630908.

It is not an unprimeable number, because it can be changed into a prime (1090630943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134592 + ... + 142464.

Almost surely, 2^1090630944 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 1090630944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1715382396).

1090630944 is an abundant number, since it is smaller than the sum of its proper divisors (2340133848).

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

1090630944 is a wasteful number, since it uses less digits than its factorization.

1090630944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7939 (or 7928 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 1090630944 is about 33024.7020274218. The cubic root of 1090630944 is about 1029.3410005216.

The spelling of 1090630944 in words is "one billion, ninety million, six hundred thirty thousand, nine hundred forty-four".