109518481 has 4 divisors (see below), whose sum is σ = 109573632. Its totient is φ = 109463332.

The previous prime is 109518473. The next prime is 109518491. The reversal of 109518481 is 184815901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 184815901 = 8017 ⋅23053.

It is a cyclic number.

It is not a de Polignac number, because 109518481 - 2³ = 109518473 is a prime.

It is a super-2 number, since 2×109518481² = 23988595361094722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109518481.

It is not an unprimeable number, because it can be changed into a prime (109518491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24481 + ... + 28606.

It is an arithmetic number, because the mean of its divisors is an integer number (27393408).

Almost surely, 2^109518481 is an apocalyptic number.

It is an amenable number.

109518481 is a deficient number, since it is larger than the sum of its proper divisors (55151).

109518481 is an equidigital number, since it uses as much as digits as its factorization.

109518481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55150.

The product of its (nonzero) digits is 11520, while the sum is 37.

The square root of 109518481 is about 10465.1077873092. The cubic root of 109518481 is about 478.4418237676.

The spelling of 109518481 in words is "one hundred nine million, five hundred eighteen thousand, four hundred eighty-one".