90164418 has 16 divisors (see below), whose sum is σ = 181706976. Its totient is φ = 29825120.

The previous prime is 90164411. The next prime is 90164429. The reversal of 90164418 is 81446109.

It is not an unprimeable number, because it can be changed into a prime (90164411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56571 + ... + 58142.

It is an arithmetic number, because the mean of its divisors is an integer number (11356686).

Almost surely, 2^90164418 is an apocalyptic number.

90164418 is an abundant number, since it is smaller than the sum of its proper divisors (91542558).

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

90164418 is a wasteful number, since it uses less digits than its factorization.

90164418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114849.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 90164418 is about 9495.4946158691. The cubic root of 90164418 is about 448.4132062734.

The spelling of 90164418 in words is "ninety million, one hundred sixty-four thousand, four hundred eighteen".