1910820811892 has 12 divisors (see below), whose sum is σ = 3343972000740. Its totient is φ = 955400240256.

The previous prime is 1910820811891. The next prime is 1910820811909. The reversal of 1910820811892 is 2981180280191.

It can be written as a sum of positive squares in 2 ways, for example, as 483976227856 + 1426844584036 = 695684^2 + 1194506^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1910820811892.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1910820811891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2110373 + ... + 2876684.

It is an arithmetic number, because the mean of its divisors is an integer number (278664333395).

Almost surely, 2^{1910820811892} is an apocalyptic number.

It is an amenable number.

1910820811892 is a deficient number, since it is larger than the sum of its proper divisors (1433151188848).

1910820811892 is a wasteful number, since it uses less digits than its factorization.

1910820811892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082850 (or 5082848 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 50.

The spelling of 1910820811892 in words is "one trillion, nine hundred ten billion, eight hundred twenty million, eight hundred eleven thousand, eight hundred ninety-two".