18246031 has 2 divisors, whose sum is σ = 18246032. Its totient is φ = 18246030.

The previous prime is 18246029. The next prime is 18246037. The reversal of 18246031 is 13064281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18246031 - 2¹ = 18246029 is a prime.

It is a super-2 number, since 2×18246031² = 665835294505922, which contains 22 as substring.

Together with 18246029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 18245987 and 18246005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18246037) 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 as a sum of consecutive naturals, namely, 9123015 + 9123016.

It is an arithmetic number, because the mean of its divisors is an integer number (9123016).

Almost surely, 2^18246031 is an apocalyptic number.

18246031 is a deficient number, since it is larger than the sum of its proper divisors (1).

18246031 is an equidigital number, since it uses as much as digits as its factorization.

18246031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 18246031 is about 4271.5373110860. The cubic root of 18246031 is about 263.2627838924.

The spelling of 18246031 in words is "eighteen million, two hundred forty-six thousand, thirty-one".