30218321853 has 24 divisors (see below), whose sum is σ = 44676952320. Its totient is φ = 19671240960.

The previous prime is 30218321851. The next prime is 30218321891. The reversal of 30218321853 is 35812381203.

It is a happy number.

It is not a de Polignac number, because 30218321853 - 2¹ = 30218321851 is a prime.

It is a super-2 number, since 2×30218321853² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30218321851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1588468 + ... + 1607378.

It is an arithmetic number, because the mean of its divisors is an integer number (1861539680).

Almost surely, 2^30218321853 is an apocalyptic number.

It is an amenable number.

30218321853 is a deficient number, since it is larger than the sum of its proper divisors (14458630467).

30218321853 is a wasteful number, since it uses less digits than its factorization.

30218321853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23089 (or 23086 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 30218321853 in words is "thirty billion, two hundred eighteen million, three hundred twenty-one thousand, eight hundred fifty-three".