109636481 has 4 divisors (see below), whose sum is σ = 110766852. Its totient is φ = 108506112.

The previous prime is 109636447. The next prime is 109636507. The reversal of 109636481 is 184636901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184636901 = 59 ⋅3129439.

It can be written as a sum of positive squares in 2 ways, for example, as 35521600 + 74114881 = 5960^2 + 8609^2 .

It is a cyclic number.

It is not a de Polignac number, because 109636481 - 2¹⁸ = 109374337 is a prime.

It is a super-2 number, since 2×109636481² = 24040315932126722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109636421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565040 + ... + 565233.

It is an arithmetic number, because the mean of its divisors is an integer number (27691713).

Almost surely, 2^109636481 is an apocalyptic number.

It is an amenable number.

109636481 is a deficient number, since it is larger than the sum of its proper divisors (1130371).

109636481 is an equidigital number, since it uses as much as digits as its factorization.

109636481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130370.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 109636481 is about 10470.7440518809. The cubic root of 109636481 is about 478.6135934717.

The spelling of 109636481 in words is "one hundred nine million, six hundred thirty-six thousand, four hundred eighty-one".