90018007 has 2 divisors, whose sum is σ = 90018008. Its totient is φ = 90018006.

The previous prime is 90017987. The next prime is 90018013. The reversal of 90018007 is 70081009.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90018007 - 2¹⁵ = 89985239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90018107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45009003 + 45009004.

It is an arithmetic number, because the mean of its divisors is an integer number (45009004).

Almost surely, 2^90018007 is an apocalyptic number.

90018007 is a deficient number, since it is larger than the sum of its proper divisors (1).

90018007 is an equidigital number, since it uses as much as digits as its factorization.

90018007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 90018007 is about 9487.7819852693. The cubic root of 90018007 is about 448.1703603128.

The spelling of 90018007 in words is "ninety million, eighteen thousand, seven".