30219820093 has 18 divisors (see below), whose sum is σ = 32090941914. Its totient is φ = 28453639392.

The previous prime is 30219820091. The next prime is 30219820139. The reversal of 30219820093 is 39002891203.

It can be written as a sum of positive squares in 3 ways, for example, as 21331478809 + 8888341284 = 146053^2 + 94278^2 .

It is not a de Polignac number, because 30219820093 - 2¹ = 30219820091 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30219820091) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10802971 + ... + 10805767.

Almost surely, 2^30219820093 is an apocalyptic number.

It is an amenable number.

30219820093 is a deficient number, since it is larger than the sum of its proper divisors (1871121821).

30219820093 is an equidigital number, since it uses as much as digits as its factorization.

30219820093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3181 (or 2989 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 30219820093 in words is "thirty billion, two hundred nineteen million, eight hundred twenty thousand, ninety-three".