18030479 has 2 divisors, whose sum is σ = 18030480. Its totient is φ = 18030478.

The previous prime is 18030473. The next prime is 18030497. The reversal of 18030479 is 97403081.

Together with next prime (18030497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18030479 - 2²⁰ = 16981903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18030473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9015239 + 9015240.

It is an arithmetic number, because the mean of its divisors is an integer number (9015240).

Almost surely, 2^18030479 is an apocalyptic number.

18030479 is a deficient number, since it is larger than the sum of its proper divisors (1).

18030479 is an equidigital number, since it uses as much as digits as its factorization.

18030479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 18030479 is about 4246.2311524457. The cubic root of 18030479 is about 262.2219774475.

The spelling of 18030479 in words is "eighteen million, thirty thousand, four hundred seventy-nine".