18526241 has 4 divisors (see below), whose sum is σ = 18538032. Its totient is φ = 18514452.

The previous prime is 18526231. The next prime is 18526259. The reversal of 18526241 is 14262581.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14262581 = 79 ⋅180539.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18526241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18526231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3095 + ... + 6828.

It is an arithmetic number, because the mean of its divisors is an integer number (4634508).

Almost surely, 2^18526241 is an apocalyptic number.

It is an amenable number.

18526241 is a deficient number, since it is larger than the sum of its proper divisors (11791).

18526241 is an equidigital number, since it uses as much as digits as its factorization.

18526241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11790.

The product of its digits is 3840, while the sum is 29.

The square root of 18526241 is about 4304.2120068603. The cubic root of 18526241 is about 264.6036129095.

The spelling of 18526241 in words is "eighteen million, five hundred twenty-six thousand, two hundred forty-one".