1091940024 has 64 divisors (see below), whose sum is σ = 3139776000. Its totient is φ = 309988224.

The previous prime is 1091940007. The next prime is 1091940037. The reversal of 1091940024 is 4200491901.

It is a junction number, because it is equal to n+sod(n) for n = 1091939973 and 1091940000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5677 + ... + 47075.

It is an arithmetic number, because the mean of its divisors is an integer number (49059000).

Almost surely, 2^1091940024 is an apocalyptic number.

1091940024 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 1091940024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1569888000).

1091940024 is an abundant number, since it is smaller than the sum of its proper divisors (2047835976).

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

1091940024 is a wasteful number, since it uses less digits than its factorization.

1091940024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41572 (or 41568 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1091940024 is about 33044.5157930934. The cubic root of 1091940024 is about 1029.7526738301.

The spelling of 1091940024 in words is "one billion, ninety-one million, nine hundred forty thousand, twenty-four".