1109631749 has 8 divisors (see below), whose sum is σ = 1196522880. Its totient is φ = 1025589600.

The previous prime is 1109631713. The next prime is 1109631751. The reversal of 1109631749 is 9471369011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1109631749 - 2²⁰ = 1108583173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109231749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711437 + ... + 712994.

It is an arithmetic number, because the mean of its divisors is an integer number (149565360).

Almost surely, 2^1109631749 is an apocalyptic number.

1109631749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1109631749 is a deficient number, since it is larger than the sum of its proper divisors (86891131).

1109631749 is a wasteful number, since it uses less digits than its factorization.

1109631749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424491.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 1109631749 is about 33311.1355105166. The cubic root of 1109631749 is about 1035.2842922898.

The spelling of 1109631749 in words is "one billion, one hundred nine million, six hundred thirty-one thousand, seven hundred forty-nine".