1109491709490 has 96 divisors (see below), whose sum is σ = 2985799864320. Its totient is φ = 285504309888.

The previous prime is 1109491709453. The next prime is 1109491709551. The reversal of 1109491709490 is 949071949011.

1109491709490 is a `hidden beast` number, since 1 + 109 + 49 + 1 + 7 + 0 + 9 + 490 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4641439 + ... + 4874621.

It is an arithmetic number, because the mean of its divisors is an integer number (31102081920).

Almost surely, 2^{1109491709490} is an apocalyptic number.

1109491709490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1109491709490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1492899932160).

1109491709490 is an abundant number, since it is smaller than the sum of its proper divisors (1876308154830).

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

1109491709490 is a wasteful number, since it uses less digits than its factorization.

1109491709490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235048 (or 235045 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 54.

The spelling of 1109491709490 in words is "one trillion, one hundred nine billion, four hundred ninety-one million, seven hundred nine thousand, four hundred ninety".