109820045 has 8 divisors (see below), whose sum is σ = 131842296. Its totient is φ = 87817216.

The previous prime is 109819999. The next prime is 109820047. The reversal of 109820045 is 540028901.

It can be written as a sum of positive squares in 4 ways, for example, as 6980164 + 102839881 = 2642^2 + 10141^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 109820045 - 2²⁶ = 42711181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109820047) 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, 14909 + ... + 21021.

It is an arithmetic number, because the mean of its divisors is an integer number (16480287).

Almost surely, 2^109820045 is an apocalyptic number.

It is an amenable number.

109820045 is a deficient number, since it is larger than the sum of its proper divisors (22022251).

109820045 is an equidigital number, since it uses as much as digits as its factorization.

109820045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9711.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 109820045 is about 10479.5059520953. The cubic root of 109820045 is about 478.8805582568.

Adding to 109820045 its reverse (540028901), we get a palindrome (649848946).

The spelling of 109820045 in words is "one hundred nine million, eight hundred twenty thousand, forty-five".