18690059 has 2 divisors, whose sum is σ = 18690060. Its totient is φ = 18690058.

The previous prime is 18690047. The next prime is 18690097. The reversal of 18690059 is 95009681.

It is an a-pointer prime, because the next prime (18690097) can be obtained adding 18690059 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18690059 - 2⁴ = 18690043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18690019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9345029 + 9345030.

It is an arithmetic number, because the mean of its divisors is an integer number (9345030).

Almost surely, 2^18690059 is an apocalyptic number.

18690059 is a deficient number, since it is larger than the sum of its proper divisors (1).

18690059 is an equidigital number, since it uses as much as digits as its factorization.

18690059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 18690059 is about 4323.2000878979. The cubic root of 18690059 is about 265.3812431198.

The spelling of 18690059 in words is "eighteen million, six hundred ninety thousand, fifty-nine".