108951845 has 4 divisors (see below), whose sum is σ = 130742220. Its totient is φ = 87161472.

The previous prime is 108951841. The next prime is 108951847. The reversal of 108951845 is 548159801.

It is a Cunningham number, because it is equal to 10438²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 39212644 + 69739201 = 6262^2 + 8351^2 .

It is a cyclic number.

It is not a de Polignac number, because 108951845 - 2² = 108951841 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108951841) 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, 10895180 + ... + 10895189.

It is an arithmetic number, because the mean of its divisors is an integer number (32685555).

Almost surely, 2^108951845 is an apocalyptic number.

It is an amenable number.

108951845 is a deficient number, since it is larger than the sum of its proper divisors (21790375).

108951845 is an equidigital number, since it uses as much as digits as its factorization.

108951845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21790374.

The product of its (nonzero) digits is 57600, while the sum is 41.

The square root of 108951845 is about 10438.0000479019. Note that the first 4 decimals coincide. The cubic root of 108951845 is about 477.6152623260.

The spelling of 108951845 in words is "one hundred eight million, nine hundred fifty-one thousand, eight hundred forty-five".