18807059 has 2 divisors, whose sum is σ = 18807060. Its totient is φ = 18807058.

The previous prime is 18807043. The next prime is 18807067. The reversal of 18807059 is 95070881.

It is a strong prime.

It is an emirp because it is prime and its reverse (95070881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18807059 - 2⁴ = 18807043 is a prime.

It is not a weakly prime, because it can be changed into another prime (18807259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9403529 + 9403530.

It is an arithmetic number, because the mean of its divisors is an integer number (9403530).

Almost surely, 2^18807059 is an apocalyptic number.

18807059 is a deficient number, since it is larger than the sum of its proper divisors (1).

18807059 is an equidigital number, since it uses as much as digits as its factorization.

18807059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 18807059 is about 4336.7106198131. The cubic root of 18807059 is about 265.9338548858.

The spelling of 18807059 in words is "eighteen million, eight hundred seven thousand, fifty-nine".