109818634 has 4 divisors (see below), whose sum is σ = 164727954. Its totient is φ = 54909316.

The previous prime is 109818619. The next prime is 109818637. The reversal of 109818634 is 436818901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 97950609 + 11868025 = 9897^2 + 3445^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (109818637) 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 as a sum of consecutive naturals, namely, 27454657 + ... + 27454660.

Almost surely, 2^109818634 is an apocalyptic number.

109818634 is a deficient number, since it is larger than the sum of its proper divisors (54909320).

109818634 is an equidigital number, since it uses as much as digits as its factorization.

109818634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54909319.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 109818634 is about 10479.4386300030. The cubic root of 109818634 is about 478.8785073156.

The spelling of 109818634 in words is "one hundred nine million, eight hundred eighteen thousand, six hundred thirty-four".