2105606554 has 8 divisors (see below), whose sum is σ = 3171965940. Its totient is φ = 1048284576.

The previous prime is 2105606551. The next prime is 2105606563. The reversal of 2105606554 is 4556065012.

It can be written as a sum of positive squares in 2 ways, for example, as 1948781025 + 156825529 = 44145^2 + 12523^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2105606551) 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 in 3 ways as a sum of consecutive naturals, for example, 2258769 + ... + 2259700.

Almost surely, 2^2105606554 is an apocalyptic number.

2105606554 is a deficient number, since it is larger than the sum of its proper divisors (1066359386).

2105606554 is a wasteful number, since it uses less digits than its factorization.

2105606554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4518704.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 2105606554 is about 45886.8886938306. Note that the first 3 decimals coincide. The cubic root of 2105606554 is about 1281.7177771036.

The spelling of 2105606554 in words is "two billion, one hundred five million, six hundred six thousand, five hundred fifty-four".