18290087 has 2 divisors, whose sum is σ = 18290088. Its totient is φ = 18290086.

The previous prime is 18290053. The next prime is 18290101. The reversal of 18290087 is 78009281.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18290087 - 2¹² = 18285991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18290017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9145043 + 9145044.

It is an arithmetic number, because the mean of its divisors is an integer number (9145044).

Almost surely, 2^18290087 is an apocalyptic number.

18290087 is a deficient number, since it is larger than the sum of its proper divisors (1).

18290087 is an equidigital number, since it uses as much as digits as its factorization.

18290087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 18290087 is about 4276.6911274956. The cubic root of 18290087 is about 263.4745008553.

The spelling of 18290087 in words is "eighteen million, two hundred ninety thousand, eighty-seven".