2104845918 has 16 divisors (see below), whose sum is σ = 4811076480. Its totient is φ = 601384536.

The previous prime is 2104845913. The next prime is 2104845929. The reversal of 2104845918 is 8195484012.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 50115379 = 2104845918 / (2 + 1 + 0 + 4 + 8 + 4 + 5 + 9 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 2104845918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104845913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25057648 + ... + 25057731.

It is an arithmetic number, because the mean of its divisors is an integer number (300692280).

Almost surely, 2^2104845918 is an apocalyptic number.

2104845918 is an abundant number, since it is smaller than the sum of its proper divisors (2706230562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2104845918 is a wasteful number, since it uses less digits than its factorization.

2104845918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50115391.

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 2104845918 is about 45878.5997824694. The cubic root of 2104845918 is about 1281.5634212484.

It can be divided in two parts, 21048 and 45918, that added together give a palindrome (66966).

The spelling of 2104845918 in words is "two billion, one hundred four million, eight hundred forty-five thousand, nine hundred eighteen".