1109517423 has 16 divisors (see below), whose sum is σ = 1722594816. Its totient is φ = 622046880.

The previous prime is 1109517419. The next prime is 1109517443. The reversal of 1109517423 is 3247159011.

It is not a de Polignac number, because 1109517423 - 2² = 1109517419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109517403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497323 + ... + 499548.

It is an arithmetic number, because the mean of its divisors is an integer number (107662176).

Almost surely, 2^1109517423 is an apocalyptic number.

1109517423 is a deficient number, since it is larger than the sum of its proper divisors (613077393).

1109517423 is an equidigital number, since it uses as much as digits as its factorization.

1109517423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996934.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 1109517423 is about 33309.4194335476. The cubic root of 1109517423 is about 1035.2487357558.

The spelling of 1109517423 in words is "one billion, one hundred nine million, five hundred seventeen thousand, four hundred twenty-three".