1109381523 has 8 divisors (see below), whose sum is σ = 1479744768. Its totient is φ = 739302984.

The previous prime is 1109381521. The next prime is 1109381549. The reversal of 1109381523 is 3251839011.

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

It is not a de Polignac number, because 1109381523 - 2¹ = 1109381521 is a prime.

It is a super-3 number, since 3×1109381523³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1109381521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61911 + ... + 77792.

It is an arithmetic number, because the mean of its divisors is an integer number (184968096).

Almost surely, 2^1109381523 is an apocalyptic number.

1109381523 is a deficient number, since it is larger than the sum of its proper divisors (370363245).

1109381523 is a wasteful number, since it uses less digits than its factorization.

1109381523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142353.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1109381523 is about 33307.3794075727. The cubic root of 1109381523 is about 1035.2064663136.

The spelling of 1109381523 in words is "one billion, one hundred nine million, three hundred eighty-one thousand, five hundred twenty-three".