18501059 has 2 divisors, whose sum is σ = 18501060. Its totient is φ = 18501058.

The previous prime is 18501031. The next prime is 18501061. The reversal of 18501059 is 95010581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18501059 - 2⁸ = 18500803 is a prime.

Together with 18501061, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18501029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9250529 + 9250530.

It is an arithmetic number, because the mean of its divisors is an integer number (9250530).

Almost surely, 2^18501059 is an apocalyptic number.

18501059 is a deficient number, since it is larger than the sum of its proper divisors (1).

18501059 is an equidigital number, since it uses as much as digits as its factorization.

18501059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 18501059 is about 4301.2857380090. The cubic root of 18501059 is about 264.4836700765.

The spelling of 18501059 in words is "eighteen million, five hundred one thousand, fifty-nine".