1040105010389 has 2 divisors, whose sum is σ = 1040105010390. Its totient is φ = 1040105010388.

The previous prime is 1040105010277. The next prime is 1040105010397. The reversal of 1040105010389 is 9830105010401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 828336616900 + 211768393489 = 910130^2 + 460183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040105010389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040105010689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520052505194 + 520052505195.

It is an arithmetic number, because the mean of its divisors is an integer number (520052505195).

Almost surely, 2^{1040105010389} is an apocalyptic number.

It is an amenable number.

1040105010389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040105010389 is an equidigital number, since it uses as much as digits as its factorization.

1040105010389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The spelling of 1040105010389 in words is "one trillion, forty billion, one hundred five million, ten thousand, three hundred eighty-nine".