1001111863 has 2 divisors, whose sum is σ = 1001111864. Its totient is φ = 1001111862.

The previous prime is 1001111833. The next prime is 1001111897. The reversal of 1001111863 is 3681111001.

It is a weak prime.

It is an emirp because it is prime and its reverse (3681111001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001111863 - 2¹³ = 1001103671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001111833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500555931 + 500555932.

It is an arithmetic number, because the mean of its divisors is an integer number (500555932).

Almost surely, 2^1001111863 is an apocalyptic number.

1001111863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001111863 is an equidigital number, since it uses as much as digits as its factorization.

1001111863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1001111863 is about 31640.3518153639. The cubic root of 1001111863 is about 1000.3704837249.

Adding to 1001111863 its reverse (3681111001), we get a palindrome (4682222864).

The spelling of 1001111863 in words is "one billion, one million, one hundred eleven thousand, eight hundred sixty-three".