12028935618 has 90 divisors (see below), whose sum is σ = 31379825763. Its totient is φ = 3434046840.

The previous prime is 12028935617. The next prime is 12028935631. The reversal of 12028935618 is 81653982021.

12028935618 is a `hidden beast` number, since 1 + 2 + 0 + 2 + 89 + 3 + 561 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6014467809 + 6014467809 = 77553^2 + 77553^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=77553.

It is not an unprimeable number, because it can be changed into a prime (12028935617) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 9771063 + ... + 9772293.

Almost surely, 2^12028935618 is an apocalyptic number.

12028935618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12028935618

12028935618 is an abundant number, since it is smaller than the sum of its proper divisors (19350890145).

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

12028935618 is an frugal number, since it uses more digits than its factorization.

12028935618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490 (or 1243 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 12028935618 in words is "twelve billion, twenty-eight million, nine hundred thirty-five thousand, six hundred eighteen".