18079427 has 2 divisors, whose sum is σ = 18079428. Its totient is φ = 18079426.

The previous prime is 18079379. The next prime is 18079447. The reversal of 18079427 is 72497081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18079427 - 2¹⁴ = 18063043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18079447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9039713 + 9039714.

It is an arithmetic number, because the mean of its divisors is an integer number (9039714).

Almost surely, 2^18079427 is an apocalyptic number.

18079427 is a deficient number, since it is larger than the sum of its proper divisors (1).

18079427 is an equidigital number, since it uses as much as digits as its factorization.

18079427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 18079427 is about 4251.9909454278. The cubic root of 18079427 is about 262.4590509064.

The spelling of 18079427 in words is "eighteen million, seventy-nine thousand, four hundred twenty-seven".