2118241905 has 64 divisors (see below), whose sum is σ = 3874832640. Its totient is φ = 978886656.

The previous prime is 2118241901. The next prime is 2118241927. The reversal of 2118241905 is 5091428112.

It is not a de Polignac number, because 2118241905 - 2² = 2118241901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2118241901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1885674 + ... + 1886796.

It is an arithmetic number, because the mean of its divisors is an integer number (60544260).

Almost surely, 2^2118241905 is an apocalyptic number.

It is an amenable number.

2118241905 is a deficient number, since it is larger than the sum of its proper divisors (1756590735).

2118241905 is a wasteful number, since it uses less digits than its factorization.

2118241905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 2118241905 is about 46024.3620814021. The cubic root of 2118241905 is about 1284.2764487344.

The spelling of 2118241905 in words is "two billion, one hundred eighteen million, two hundred forty-one thousand, nine hundred five".