1115526641 has 4 divisors (see below), whose sum is σ = 1118254500. Its totient is φ = 1112798784.

The previous prime is 1115526637. The next prime is 1115526649. The reversal of 1115526641 is 1466255111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1466255111 = 1153 ⋅1271687.

It can be written as a sum of positive squares in 2 ways, for example, as 650046016 + 465480625 = 25496^2 + 21575^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115526641 - 2² = 1115526637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1115526598 and 1115526607.

It is not an unprimeable number, because it can be changed into a prime (1115526649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1363316 + ... + 1364133.

It is an arithmetic number, because the mean of its divisors is an integer number (279563625).

Almost surely, 2^1115526641 is an apocalyptic number.

It is an amenable number.

1115526641 is a deficient number, since it is larger than the sum of its proper divisors (2727859).

1115526641 is an equidigital number, since it uses as much as digits as its factorization.

1115526641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727858.

The product of its digits is 7200, while the sum is 32.

The square root of 1115526641 is about 33399.5006100391. The cubic root of 1115526641 is about 1037.1143630109.

The spelling of 1115526641 in words is "one billion, one hundred fifteen million, five hundred twenty-six thousand, six hundred forty-one".