9081818280 has 128 divisors (see below), whose sum is σ = 31249382400. Its totient is φ = 2343686400.

The previous prime is 9081818269. The next prime is 9081818281. The reversal of 9081818280 is 828181809.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (9081818281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102151 + ... + 169110.

It is an arithmetic number, because the mean of its divisors is an integer number (244135800).

Almost surely, 2^9081818280 is an apocalyptic number.

9081818280 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9081818280 is an abundant number, since it is smaller than the sum of its proper divisors (22167564120).

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

9081818280 is a wasteful number, since it uses less digits than its factorization.

9081818280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271312 (or 271302 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 45.

The square root of 9081818280 is about 95298.5743859791. The cubic root of 9081818280 is about 2086.3681099093.

The spelling of 9081818280 in words is "nine billion, eighty-one million, eight hundred eighteen thousand, two hundred eighty".