18628343 has 2 divisors, whose sum is σ = 18628344. Its totient is φ = 18628342.

The previous prime is 18628319. The next prime is 18628361. The reversal of 18628343 is 34382681.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (34382681) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18628343 - 2¹⁰ = 18627319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18628373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9314171 + 9314172.

It is an arithmetic number, because the mean of its divisors is an integer number (9314172).

Almost surely, 2^18628343 is an apocalyptic number.

18628343 is a deficient number, since it is larger than the sum of its proper divisors (1).

18628343 is an equidigital number, since it uses as much as digits as its factorization.

18628343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 35.

The square root of 18628343 is about 4316.0564176109. The cubic root of 18628343 is about 265.0888179795.

The spelling of 18628343 in words is "eighteen million, six hundred twenty-eight thousand, three hundred forty-three".