18128288213 has 16 divisors (see below), whose sum is σ = 21263026176. Its totient is φ = 15135071280.

The previous prime is 18128288203. The next prime is 18128288219. The reversal of 18128288213 is 31288282181.

It is a happy number.

It is not a de Polignac number, because 18128288213 - 2⁴ = 18128288197 is a prime.

It is a super-3 number, since 3×18128288213³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18128288219) 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, 178481 + ... + 260982.

It is an arithmetic number, because the mean of its divisors is an integer number (1328939136).

Almost surely, 2^18128288213 is an apocalyptic number.

It is an amenable number.

18128288213 is a deficient number, since it is larger than the sum of its proper divisors (3134737963).

18128288213 is an equidigital number, since it uses as much as digits as its factorization.

18128288213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439624.

The product of its digits is 98304, while the sum is 44.

The spelling of 18128288213 in words is "eighteen billion, one hundred twenty-eight million, two hundred eighty-eight thousand, two hundred thirteen".