18579047 has 2 divisors, whose sum is σ = 18579048. Its totient is φ = 18579046.

The previous prime is 18579031. The next prime is 18579059. The reversal of 18579047 is 74097581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18579047 - 2⁴ = 18579031 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18578995 and 18579013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18579247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9289523 + 9289524.

It is an arithmetic number, because the mean of its divisors is an integer number (9289524).

Almost surely, 2^18579047 is an apocalyptic number.

18579047 is a deficient number, since it is larger than the sum of its proper divisors (1).

18579047 is an equidigital number, since it uses as much as digits as its factorization.

18579047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 18579047 is about 4310.3418657921. The cubic root of 18579047 is about 264.8547774384.

The spelling of 18579047 in words is "eighteen million, five hundred seventy-nine thousand, forty-seven".