1111442513 has 4 divisors (see below), whose sum is σ = 1114740900. Its totient is φ = 1108144128.

The previous prime is 1111442483. The next prime is 1111442533. The reversal of 1111442513 is 3152441111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3152441111 = 23 ⋅137062657.

It can be written as a sum of positive squares in 2 ways, for example, as 602849809 + 508592704 = 24553^2 + 22552^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111442513 - 2¹² = 1111438417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111442533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1648688 + ... + 1649361.

It is an arithmetic number, because the mean of its divisors is an integer number (278685225).

Almost surely, 2^1111442513 is an apocalyptic number.

It is an amenable number.

1111442513 is a deficient number, since it is larger than the sum of its proper divisors (3298387).

1111442513 is an equidigital number, since it uses as much as digits as its factorization.

1111442513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3298386.

The product of its digits is 480, while the sum is 23.

The square root of 1111442513 is about 33338.3039910551. The cubic root of 1111442513 is about 1035.8471326874.

Adding to 1111442513 its reverse (3152441111), we get a palindrome (4263883624).

The spelling of 1111442513 in words is "one billion, one hundred eleven million, four hundred forty-two thousand, five hundred thirteen".