90018162 has 128 divisors (see below), whose sum is σ = 240710400. Its totient is φ = 24634368.

The previous prime is 90018161. The next prime is 90018163. The reversal of 90018162 is 26181009.

It is an interprime number because it is at equal distance from previous prime (90018161) and next prime (90018163).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (90018161) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 226548 + ... + 226944.

It is an arithmetic number, because the mean of its divisors is an integer number (1880550).

Almost surely, 2^90018162 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90018162, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120355200).

90018162 is an abundant number, since it is smaller than the sum of its proper divisors (150692238).

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

90018162 is a wasteful number, since it uses less digits than its factorization.

90018162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 90018162 is about 9487.7901536659. The cubic root of 90018162 is about 448.1706175441.

The spelling of 90018162 in words is "ninety million, eighteen thousand, one hundred sixty-two".