18413459 has 2 divisors, whose sum is σ = 18413460. Its totient is φ = 18413458.

The previous prime is 18413453. The next prime is 18413471. The reversal of 18413459 is 95431481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18413459 - 2⁴ = 18413443 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18413453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9206729 + 9206730.

It is an arithmetic number, because the mean of its divisors is an integer number (9206730).

Almost surely, 2^18413459 is an apocalyptic number.

18413459 is a deficient number, since it is larger than the sum of its proper divisors (1).

18413459 is an equidigital number, since it uses as much as digits as its factorization.

18413459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 18413459 is about 4291.0906539014. The cubic root of 18413459 is about 264.0655780998.

The spelling of 18413459 in words is "eighteen million, four hundred thirteen thousand, four hundred fifty-nine".