109955918 has 4 divisors (see below), whose sum is σ = 164933880. Its totient is φ = 54977958.

The previous prime is 109955917. The next prime is 109955921. The reversal of 109955918 is 819559901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 819559901 = 1061 ⋅772441.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109955917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27488978 + ... + 27488981.

It is an arithmetic number, because the mean of its divisors is an integer number (41233470).

Almost surely, 2^109955918 is an apocalyptic number.

109955918 is a deficient number, since it is larger than the sum of its proper divisors (54977962).

109955918 is an equidigital number, since it uses as much as digits as its factorization.

109955918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54977961.

The product of its (nonzero) digits is 145800, while the sum is 47.

The square root of 109955918 is about 10485.9867442220. The cubic root of 109955918 is about 479.0779724969.

The spelling of 109955918 in words is "one hundred nine million, nine hundred fifty-five thousand, nine hundred eighteen".