90818234181 has 16 divisors (see below), whose sum is σ = 135779899200. Its totient is φ = 59990024304.

The previous prime is 90818234119. The next prime is 90818234209. The reversal of 90818234181 is 18143281809.

It is not a de Polignac number, because 90818234181 - 2²⁶ = 90751125317 is a prime.

It is a super-2 number, since 2×90818234181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90818234281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15426591 + ... + 15432476.

It is an arithmetic number, because the mean of its divisors is an integer number (8486243700).

Almost surely, 2^90818234181 is an apocalyptic number.

It is an amenable number.

90818234181 is a deficient number, since it is larger than the sum of its proper divisors (44961665019).

90818234181 is a wasteful number, since it uses less digits than its factorization.

90818234181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30859185 (or 30859179 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 90818234181 in words is "ninety billion, eight hundred eighteen million, two hundred thirty-four thousand, one hundred eighty-one".