30188899193 has 4 divisors (see below), whose sum is σ = 30189527808. Its totient is φ = 30188270580.

The previous prime is 30188899187. The next prime is 30188899199. The reversal of 30188899193 is 39199888103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (30188899187) and next prime (30188899199).

It is a cyclic number.

It is not a de Polignac number, because 30188899193 - 2⁶ = 30188899129 is a prime.

It is a super-2 number, since 2×30188899193² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30188899199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235721 + ... + 340502.

It is an arithmetic number, because the mean of its divisors is an integer number (7547381952).

Almost surely, 2^30188899193 is an apocalyptic number.

It is an amenable number.

30188899193 is a deficient number, since it is larger than the sum of its proper divisors (628615).

30188899193 is an equidigital number, since it uses as much as digits as its factorization.

30188899193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628614.

The product of its (nonzero) digits is 3359232, while the sum is 59.

The spelling of 30188899193 in words is "thirty billion, one hundred eighty-eight million, eight hundred ninety-nine thousand, one hundred ninety-three".