90018458 has 16 divisors (see below), whose sum is σ = 142223040. Its totient is φ = 42647616.

The previous prime is 90018443. The next prime is 90018469. The reversal of 90018458 is 85481009.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4223 + ... + 14066.

It is an arithmetic number, because the mean of its divisors is an integer number (8888940).

Almost surely, 2^90018458 is an apocalyptic number.

90018458 is a deficient number, since it is larger than the sum of its proper divisors (52204582).

90018458 is a wasteful number, since it uses less digits than its factorization.

90018458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18421.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 90018458 is about 9487.8057526490. The cubic root of 90018458 is about 448.1711087722.

The spelling of 90018458 in words is "ninety million, eighteen thousand, four hundred fifty-eight".