18832213 has 2 divisors, whose sum is σ = 18832214. Its totient is φ = 18832212.

The previous prime is 18832207. The next prime is 18832217. The reversal of 18832213 is 31223881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11444689 + 7387524 = 3383^2 + 2718^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18832213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18832217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9416106 + 9416107.

It is an arithmetic number, because the mean of its divisors is an integer number (9416107).

Almost surely, 2^18832213 is an apocalyptic number.

It is an amenable number.

18832213 is a deficient number, since it is larger than the sum of its proper divisors (1).

18832213 is an equidigital number, since it uses as much as digits as its factorization.

18832213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 28.

The square root of 18832213 is about 4339.6097750835. The cubic root of 18832213 is about 266.0523621644.

It can be divided in two parts, 1883 and 2213, that added together give a 12-th power (4096 = 2¹²).

The spelling of 18832213 in words is "eighteen million, eight hundred thirty-two thousand, two hundred thirteen".