1100155013 has 2 divisors, whose sum is σ = 1100155014. Its totient is φ = 1100155012.

The previous prime is 1100154997. The next prime is 1100155031. The reversal of 1100155013 is 3105510011.

Together with next prime (1100155031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1057095169 + 43059844 = 32513^2 + 6562^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100155013 - 2⁴ = 1100154997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1100154982 and 1100155000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100155033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550077506 + 550077507.

It is an arithmetic number, because the mean of its divisors is an integer number (550077507).

Almost surely, 2^1100155013 is an apocalyptic number.

It is an amenable number.

1100155013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100155013 is an equidigital number, since it uses as much as digits as its factorization.

1100155013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 1100155013 is about 33168.5847301328. The cubic root of 1100155013 is about 1032.3286031296.

Adding to 1100155013 its reverse (3105510011), we get a palindrome (4205665024).

The spelling of 1100155013 in words is "one billion, one hundred million, one hundred fifty-five thousand, thirteen".