19984330034 has 4 divisors (see below), whose sum is σ = 29976495054. Its totient is φ = 9992165016.

The previous prime is 19984330021. The next prime is 19984330039. The reversal of 19984330034 is 43003348991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43003348991 = 23333 ⋅1843027.

It can be written as a sum of positive squares in only one way, i.e., 11289700009 + 8694630025 = 106253^2 + 93245^2 .

It is not an unprimeable number, because it can be changed into a prime (19984330039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996082507 + ... + 4996082510.

Almost surely, 2^19984330034 is an apocalyptic number.

19984330034 is a deficient number, since it is larger than the sum of its proper divisors (9992165020).

19984330034 is an equidigital number, since it uses as much as digits as its factorization.

19984330034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9992165019.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 19984330034 in words is "nineteen billion, nine hundred eighty-four million, three hundred thirty thousand, thirty-four".