109808537 has 8 divisors (see below), whose sum is σ = 113115912. Its totient is φ = 106531200.

The previous prime is 109808533. The next prime is 109808551. The reversal of 109808537 is 735808901.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9388096 + 100420441 = 3064^2 + 10021^2 .

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 109808537 - 2² = 109808533 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 junction number, because it is equal to n+sod(n) for n = 109808494 and 109808503.

It is not an unprimeable number, because it can be changed into a prime (109808533) 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, 23 + ... + 14819.

It is an arithmetic number, because the mean of its divisors is an integer number (14139489).

Almost surely, 2^109808537 is an apocalyptic number.

It is an amenable number.

109808537 is a deficient number, since it is larger than the sum of its proper divisors (3307375).

109808537 is a wasteful number, since it uses less digits than its factorization.

109808537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15019.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 109808537 is about 10478.9568660244. The cubic root of 109808537 is about 478.8638304364.

The spelling of 109808537 in words is "one hundred nine million, eight hundred eight thousand, five hundred thirty-seven".