2105400570 has 64 divisors (see below), whose sum is σ = 6219037440. Its totient is φ = 444215808.

The previous prime is 2105400569. The next prime is 2105400571. The reversal of 2105400570 is 750045012.

It is an interprime number because it is at equal distance from previous prime (2105400569) and next prime (2105400571).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2105400570.

It is not an unprimeable number, because it can be changed into a prime (2105400571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 382875 + ... + 388334.

It is an arithmetic number, because the mean of its divisors is an integer number (97172460).

Almost surely, 2^2105400570 is an apocalyptic number.

2105400570 is an abundant number, since it is smaller than the sum of its proper divisors (4113636870).

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

2105400570 is a wasteful number, since it uses less digits than its factorization.

2105400570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771239.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 2105400570 is about 45884.6441633800. The cubic root of 2105400570 is about 1281.6759804436.

Adding to 2105400570 its reverse (750045012), we get a palindrome (2855445582).

The spelling of 2105400570 in words is "two billion, one hundred five million, four hundred thousand, five hundred seventy".