18246841 has 4 divisors (see below), whose sum is σ = 18286884. Its totient is φ = 18206800.

The previous prime is 18246827. The next prime is 18246853. The reversal of 18246841 is 14864281.

18246841 = 3020² + 3021².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14864281 = 193 ⋅77017.

It can be written as a sum of positive squares in 2 ways, for example, as 9120400 + 9126441 = 3020^2 + 3021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18246841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18246797 and 18246806.

It is not an unprimeable number, because it can be changed into a prime (18246881) 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, 19330 + ... + 20251.

It is an arithmetic number, because the mean of its divisors is an integer number (4571721).

Almost surely, 2^18246841 is an apocalyptic number.

18246841 is the 3021-st centered square number.

It is an amenable number.

18246841 is a deficient number, since it is larger than the sum of its proper divisors (40043).

18246841 is an equidigital number, since it uses as much as digits as its factorization.

18246841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40042.

The product of its digits is 12288, while the sum is 34.

The square root of 18246841 is about 4271.6321236736. The cubic root of 18246841 is about 263.2666795287.

The spelling of 18246841 in words is "eighteen million, two hundred forty-six thousand, eight hundred forty-one".