2105388930 has 16 divisors (see below), whose sum is σ = 5052933504. Its totient is φ = 561437040.

The previous prime is 2105388913. The next prime is 2105388931. The reversal of 2105388930 is 398835012.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2105388931) 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, 35089786 + ... + 35089845.

It is an arithmetic number, because the mean of its divisors is an integer number (315808344).

Almost surely, 2^2105388930 is an apocalyptic number.

2105388930 is an abundant number, since it is smaller than the sum of its proper divisors (2947544574).

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

2105388930 is a wasteful number, since it uses less digits than its factorization.

2105388930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70179641.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 2105388930 is about 45884.5173233848. The cubic root of 2105388930 is about 1281.6736184645.

The spelling of 2105388930 in words is "two billion, one hundred five million, three hundred eighty-eight thousand, nine hundred thirty".