18496213 has 2 divisors, whose sum is σ = 18496214. Its totient is φ = 18496212.

The previous prime is 18496199. The next prime is 18496217. The reversal of 18496213 is 31269481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18472804 + 23409 = 4298^2 + 153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18496213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18496217) 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, 9248106 + 9248107.

It is an arithmetic number, because the mean of its divisors is an integer number (9248107).

Almost surely, 2^18496213 is an apocalyptic number.

It is an amenable number.

18496213 is a deficient number, since it is larger than the sum of its proper divisors (1).

18496213 is an equidigital number, since it uses as much as digits as its factorization.

18496213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 18496213 is about 4300.7223811820. The cubic root of 18496213 is about 264.4605759068.

The spelling of 18496213 in words is "eighteen million, four hundred ninety-six thousand, two hundred thirteen".