19384351844434 has 4 divisors (see below), whose sum is σ = 29076527766654. Its totient is φ = 9692175922216.

The previous prime is 19384351844393. The next prime is 19384351844441. The reversal of 19384351844434 is 43444815348391.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14539708731409 + 4844643113025 = 3813097^2 + 2201055^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4846087961107 + ... + 4846087961110.

Almost surely, 2^{19384351844434} is an apocalyptic number.

19384351844434 is a deficient number, since it is larger than the sum of its proper divisors (9692175922220).

19384351844434 is an equidigital number, since it uses as much as digits as its factorization.

19384351844434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9692175922219.

The product of its digits is 79626240, while the sum is 61.

The spelling of 19384351844434 in words is "nineteen trillion, three hundred eighty-four billion, three hundred fifty-one million, eight hundred forty-four thousand, four hundred thirty-four".