90150018 has 32 divisors (see below), whose sum is σ = 215018496. Its totient is φ = 24637008.

The previous prime is 90150017. The next prime is 90150023. The reversal of 90150018 is 81005109.

It is a self number, because there is not a number n which added to its sum of digits gives 90150018.

It is not an unprimeable number, because it can be changed into a prime (90150017) 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 in 15 ways as a sum of consecutive naturals, for example, 45696 + ... + 47627.

It is an arithmetic number, because the mean of its divisors is an integer number (6719328).

Almost surely, 2^90150018 is an apocalyptic number.

90150018 is an abundant number, since it is smaller than the sum of its proper divisors (124868478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90150018 is a wasteful number, since it uses less digits than its factorization.

90150018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93358.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 90150018 is about 9494.7363312522. The cubic root of 90150018 is about 448.3893332419.

The spelling of 90150018 in words is "ninety million, one hundred fifty thousand, eighteen".