1028113913844 has 72 divisors (see below), whose sum is σ = 2610751295880. Its totient is φ = 341135235072.

The previous prime is 1028113913821. The next prime is 1028113913903. The reversal of 1028113913844 is 4483193118201.

1028113913844 is a `hidden beast` number, since 102 + 81 + 1 + 3 + 91 + 384 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 19415078244 + 1008698835600 = 139338^2 + 1004340^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1028113913844.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32605174 + ... + 32636690.

It is an arithmetic number, because the mean of its divisors is an integer number (36260434665).

Almost surely, 2^{1028113913844} is an apocalyptic number.

It is an amenable number.

1028113913844 is an abundant number, since it is smaller than the sum of its proper divisors (1582637382036).

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

1028113913844 is a wasteful number, since it uses less digits than its factorization.

1028113913844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35649 (or 35644 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 1028113913844 in words is "one trillion, twenty-eight billion, one hundred thirteen million, nine hundred thirteen thousand, eight hundred forty-four".