19300029985 has 4 divisors (see below), whose sum is σ = 23160035988. Its totient is φ = 15440023984.

The previous prime is 19300029979. The next prime is 19300030019. The reversal of 19300029985 is 58992000391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58992000391 = 137 ⋅430598543.

It can be written as a sum of positive squares in 2 ways, for example, as 8359079184 + 10940950801 = 91428^2 + 104599^2 .

It is a cyclic number.

It is not a de Polignac number, because 19300029985 - 2⁵ = 19300029953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1930002994 + ... + 1930003003.

It is an arithmetic number, because the mean of its divisors is an integer number (5790008997).

Almost surely, 2^19300029985 is an apocalyptic number.

It is an amenable number.

19300029985 is a deficient number, since it is larger than the sum of its proper divisors (3860006003).

19300029985 is an equidigital number, since it uses as much as digits as its factorization.

19300029985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3860006002.

The product of its (nonzero) digits is 174960, while the sum is 46.

The spelling of 19300029985 in words is "nineteen billion, three hundred million, twenty-nine thousand, nine hundred eighty-five".