1011111613 has 2 divisors, whose sum is σ = 1011111614. Its totient is φ = 1011111612.

The previous prime is 1011111571. The next prime is 1011111623. The reversal of 1011111613 is 3161111101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 981756889 + 29354724 = 31333^2 + 5418^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1011111613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011111623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505555806 + 505555807.

It is an arithmetic number, because the mean of its divisors is an integer number (505555807).

Almost surely, 2^1011111613 is an apocalyptic number.

It is an amenable number.

1011111613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011111613 is an equidigital number, since it uses as much as digits as its factorization.

1011111613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 1011111613 is about 31797.9812724016. The cubic root of 1011111613 is about 1003.6902364043.

Adding to 1011111613 its reverse (3161111101), we get a palindrome (4172222714).

The spelling of 1011111613 in words is "one billion, eleven million, one hundred eleven thousand, six hundred thirteen".