18429679 has 2 divisors, whose sum is σ = 18429680. Its totient is φ = 18429678.

The previous prime is 18429629. The next prime is 18429689. The reversal of 18429679 is 97692481.

It is a strong prime.

It is an emirp because it is prime and its reverse (97692481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18429679 - 2¹¹ = 18427631 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18429629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9214839 + 9214840.

It is an arithmetic number, because the mean of its divisors is an integer number (9214840).

Almost surely, 2^18429679 is an apocalyptic number.

18429679 is a deficient number, since it is larger than the sum of its proper divisors (1).

18429679 is an equidigital number, since it uses as much as digits as its factorization.

18429679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 18429679 is about 4292.9802002805. The cubic root of 18429679 is about 264.1430918114.

The spelling of 18429679 in words is "eighteen million, four hundred twenty-nine thousand, six hundred seventy-nine".